bake: split definition into two files

Allows to either include tags or labels or both definitions.
Keep bake-file output for backward compatibility.

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -323,7 +323,8 @@ jobs:
         with:
           files: |
             ./test/docker-bake.hcl
-            ${{ steps.docker_meta.outputs.bake-file }}
+            ${{ steps.docker_meta.outputs.bake-file-tags }}
+            ${{ steps.docker_meta.outputs.bake-file-labels }}
           targets: |
             release
 

README.md

@@ -230,8 +230,8 @@ jobs:
           targets: build
 ```
 
-Content of `${{ steps.meta.outputs.bake-file }}` file will look like this with
+Content of `${{ steps.meta.outputs.bake-file }}` file, combining tags and
-`refs/tags/v1.2.3` ref:
+labels, will look like this with `refs/tags/v1.2.3` ref:
 
 ```json
 {
@@ -262,6 +262,22 @@ Content of `${{ steps.meta.outputs.bake-file }}` file will look like this with
 }
 ```
 
+You can also use the `bake-file-tags` and `bake-file-labels` outputs if you
+just want to use tags and/or labels respectively. The following example is
+similar to the previous one:
+
+```yaml
+      -
+        name: Build
+        uses: docker/bake-action@v3
+        with:
+          files: |
+            ./docker-bake.hcl
+            ${{ steps.meta.outputs.bake-file-tags }}
+            ${{ steps.meta.outputs.bake-file-labels }}
+          targets: build
+```
+
 ## Customizing
 
 ### inputs
@@ -277,7 +293,7 @@ The following inputs can be used as `step.with` keys:
 > ```
 
 | Name          | Type   | Description                                                                   |
-|---------------------|--------|-------------------------------------------------------------------------------|
+|---------------|--------|-------------------------------------------------------------------------------|
 | `context`     | String | Where to get context data. Allowed options are: `workflow` (default), `git`.  |
 | `images`      | List   | List of Docker images to use as base name for tags                            |
 | `tags`        | List   | List of [tags](#tags-input) as key-value pair attributes                      |
@@ -292,12 +308,13 @@ The following inputs can be used as `step.with` keys:
 The following outputs are available:
 
 | Name               | Type   | Description                                                                                     |
-|-------------|--------|----------------------------------------------------------------------------|
+|--------------------|--------|-------------------------------------------------------------------------------------------------|
 | `version`          | String | Docker image version                                                                            |
 | `tags`             | String | Docker tags                                                                                     |
 | `labels`           | String | Docker labels                                                                                   |
 | `json`             | String | JSON output of tags and labels                                                                  |
-| `bake-file` | File   | [Bake file definition](https://docs.docker.com/build/bake/reference/) path |
+| `bake-file-tags`   | File   | [Bake file definition](https://docs.docker.com/build/bake/reference/) path with tags            |
+| `bake-file-labels` | File   | [Bake file definition](https://docs.docker.com/build/bake/reference/) path with labels          |
 
 Alternatively, each output is also exported as an environment variable:
 
@@ -305,7 +322,8 @@ Alternatively, each output is also exported as an environment variable:
 * `DOCKER_METADATA_OUTPUT_TAGS`
 * `DOCKER_METADATA_OUTPUT_LABELS`
 * `DOCKER_METADATA_OUTPUT_JSON`
-* `DOCKER_METADATA_OUTPUT_BAKE_FILE`
+* `DOCKER_METADATA_OUTPUT_BAKE_FILE_TAGS`
+* `DOCKER_METADATA_OUTPUT_BAKE_FILE_LABELS`
 
 So it can be used with our [Docker Build Push action](https://github.com/docker/build-push-action/):
 

__tests__/meta.test.ts

@@ -3719,12 +3719,363 @@ describe('json', () => {
   });
 });
 
-describe('bake', () => {
+describe('bakeFile', () => {
   // prettier-ignore
   // eslint-disable-next-line jest/expect-expect
   test.each([
     [
-      'bake01',
+      'bakeFile01',
+      'event_push_dev.env',
+      {
+        images: ['user/app'],
+        tags: [
+          `type=ref,event=branch`,
+          `type=raw,my`,
+          `type=raw,custom`,
+          `type=raw,tags`
+        ],
+        labels: [
+          "invalid"
+        ]
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "user/app:dev",
+              "user/app:my",
+              "user/app:custom",
+              "user/app:tags"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "dev",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "dev"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile02',
+      'event_push_dev.env',
+      {
+        images: ['user/app'],
+        tags: [
+          `type=ref,event=branch`,
+          `type=raw,my`
+        ]
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "user/app:dev",
+              "user/app:my",
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "dev",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "dev"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile03',
+      'event_tag_release1.env',
+      {
+        images: ['user/app'],
+        tags: [
+          `type=ref,event=tag`,
+          `type=raw,my`,
+          `type=raw,custom`,
+          `type=raw,tags`
+        ],
+        bakeTarget: "meta"
+      } as Inputs,
+      {
+        "target": {
+          "meta": {
+            "tags": [
+              "user/app:release1",
+              "user/app:my",
+              "user/app:custom",
+              "user/app:tags",
+              "user/app:latest"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "release1",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "meta": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "release1"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile04',
+      'event_tag_20200110-RC2.env',
+      {
+        images: ['user/app'],
+        tags: [
+          `type=match,pattern=\\d{8}`,
+          `type=raw,my`,
+          `type=raw,custom`,
+          `type=raw,tags`
+        ],
+        flavor: [
+          `latest=false`
+        ]
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "user/app:20200110",
+              "user/app:my",
+              "user/app:custom",
+              "user/app:tags"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "20200110",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "20200110"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile05',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=semver,pattern={{version}}`,
+          `type=semver,pattern={{major}}.{{minor}}`,
+          `type=semver,pattern={{major}}`,
+          `type=raw,my`,
+          `type=raw,custom`,
+          `type=raw,tags`
+        ]
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "org/app:1.1.1",
+              "org/app:1.1",
+              "org/app:1",
+              "org/app:my",
+              "org/app:custom",
+              "org/app:tags",
+              "org/app:latest",
+              "ghcr.io/user/app:1.1.1",
+              "ghcr.io/user/app:1.1",
+              "ghcr.io/user/app:1",
+              "ghcr.io/user/app:my",
+              "ghcr.io/user/app:custom",
+              "ghcr.io/user/app:tags",
+              "ghcr.io/user/app:latest"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
+              "DOCKER_META_VERSION": "1.1.1",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "1.1.1"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile06',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=raw,my`,
+          `type=raw,custom`,
+          `type=raw,tags`
+        ]
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "org/app:my",
+              "org/app:custom",
+              "org/app:tags",
+              "ghcr.io/user/app:my",
+              "ghcr.io/user/app:custom",
+              "ghcr.io/user/app:tags"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
+              "DOCKER_META_VERSION": "my",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "This your first repo!",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "Hello-World",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.version": "my"
+            }
+          }
+        }
+      }
+    ],
+    [
+      'bakeFile07',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app'],
+        labels: [
+          "maintainer=CrazyMax",
+          "org.opencontainers.image.title=MyCustom=Title",
+          "org.opencontainers.image.description=Another description",
+          "org.opencontainers.image.vendor=MyCompany",
+        ],
+      } as Inputs,
+      {
+        "target": {
+          "docker-metadata-action": {
+            "tags": [
+              "org/app:v1.1.1",
+              "org/app:latest"
+            ],
+            "args": {
+              "DOCKER_META_IMAGES": "org/app",
+              "DOCKER_META_VERSION": "v1.1.1",
+            }
+          }
+        }
+      },
+      {
+        "target": {
+          "docker-metadata-action": {
+            "labels": {
+              "maintainer": "CrazyMax",
+              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
+              "org.opencontainers.image.description": "Another description",
+              "org.opencontainers.image.licenses": "MIT",
+              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
+              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.title": "MyCustom=Title",
+              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
+              "org.opencontainers.image.vendor": "MyCompany",
+              "org.opencontainers.image.version": "v1.1.1"
+            }
+          }
+        }
+      }
+    ]
+  ])('given %p with %p event', async (name: string, envFile: string, inputs: Inputs, exBakeTags: unknown, exBakeLabels: unknown) => {
+    process.env = dotenv.parse(fs.readFileSync(path.join(__dirname, 'fixtures', envFile)));
+
+    const toolkit = new Toolkit();
+    const repo = await toolkit.github.repoData();
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+
+    const bakeFileTags = meta.getBakeFile('tags');
+    expect(JSON.parse(fs.readFileSync(bakeFileTags, 'utf8'))).toEqual(exBakeTags);
+
+    const bakeFileLabels = meta.getBakeFile('labels');
+    expect(JSON.parse(fs.readFileSync(bakeFileLabels, 'utf8'))).toEqual(exBakeLabels);
+  });
+});
+
+describe('bakeFileTagsLabels', () => {
+  // prettier-ignore
+  // eslint-disable-next-line jest/expect-expect
+  test.each([
+    [
+      'bakeFileTagsLabels01',
       'event_push_dev.env',
       {
         images: ['user/app'],
@@ -3764,254 +4115,6 @@ describe('bake', () => {
           }
         }
       }
-    ],
-    [
-      'bake02',
-      'event_push_dev.env',
-      {
-        images: ['user/app'],
-        tags: [
-          `type=ref,event=branch`,
-          `type=raw,my`
-        ]
-      } as Inputs,
-      {
-        "target": {
-          "docker-metadata-action": {
-            "tags": [
-              "user/app:dev",
-              "user/app:my",
-            ],
-            "labels": {
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "This your first repo!",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "Hello-World",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.version": "dev"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "user/app",
-              "DOCKER_META_VERSION": "dev",
-            }
-          }
-        }
-      }
-    ],
-    [
-      'bake03',
-      'event_tag_release1.env',
-      {
-        images: ['user/app'],
-        tags: [
-          `type=ref,event=tag`,
-          `type=raw,my`,
-          `type=raw,custom`,
-          `type=raw,tags`
-        ],
-        bakeTarget: "meta"
-      } as Inputs,
-      {
-        "target": {
-          "meta": {
-            "tags": [
-              "user/app:release1",
-              "user/app:my",
-              "user/app:custom",
-              "user/app:tags",
-              "user/app:latest"
-            ],
-            "labels": {
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "This your first repo!",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "Hello-World",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.version": "release1"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "user/app",
-              "DOCKER_META_VERSION": "release1",
-            }
-          }
-        }
-      }
-    ],
-    [
-      'bake04',
-      'event_tag_20200110-RC2.env',
-      {
-        images: ['user/app'],
-        tags: [
-          `type=match,pattern=\\d{8}`,
-          `type=raw,my`,
-          `type=raw,custom`,
-          `type=raw,tags`
-        ],
-        flavor: [
-          `latest=false`
-        ]
-      } as Inputs,
-      {
-        "target": {
-          "docker-metadata-action": {
-            "tags": [
-              "user/app:20200110",
-              "user/app:my",
-              "user/app:custom",
-              "user/app:tags"
-            ],
-            "labels": {
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "This your first repo!",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "Hello-World",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.version": "20200110"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "user/app",
-              "DOCKER_META_VERSION": "20200110",
-            }
-          }
-        }
-      }
-    ],
-    [
-      'bake05',
-      'event_tag_v1.1.1.env',
-      {
-        images: ['org/app', 'ghcr.io/user/app'],
-        tags: [
-          `type=semver,pattern={{version}}`,
-          `type=semver,pattern={{major}}.{{minor}}`,
-          `type=semver,pattern={{major}}`,
-          `type=raw,my`,
-          `type=raw,custom`,
-          `type=raw,tags`
-        ]
-      } as Inputs,
-      {
-        "target": {
-          "docker-metadata-action": {
-            "tags": [
-              "org/app:1.1.1",
-              "org/app:1.1",
-              "org/app:1",
-              "org/app:my",
-              "org/app:custom",
-              "org/app:tags",
-              "org/app:latest",
-              "ghcr.io/user/app:1.1.1",
-              "ghcr.io/user/app:1.1",
-              "ghcr.io/user/app:1",
-              "ghcr.io/user/app:my",
-              "ghcr.io/user/app:custom",
-              "ghcr.io/user/app:tags",
-              "ghcr.io/user/app:latest"
-            ],
-            "labels": {
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "This your first repo!",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "Hello-World",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.version": "1.1.1"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
-              "DOCKER_META_VERSION": "1.1.1",
-            }
-          }
-        }
-      }
-    ],
-    [
-      'bake06',
-      'event_tag_v1.1.1.env',
-      {
-        images: ['org/app', 'ghcr.io/user/app'],
-        tags: [
-          `type=raw,my`,
-          `type=raw,custom`,
-          `type=raw,tags`
-        ]
-      } as Inputs,
-      {
-        "target": {
-          "docker-metadata-action": {
-            "tags": [
-              "org/app:my",
-              "org/app:custom",
-              "org/app:tags",
-              "ghcr.io/user/app:my",
-              "ghcr.io/user/app:custom",
-              "ghcr.io/user/app:tags"
-            ],
-            "labels": {
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "This your first repo!",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "Hello-World",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.version": "my"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
-              "DOCKER_META_VERSION": "my",
-            }
-          }
-        }
-      }
-    ],
-    [
-      'bake07',
-      'event_tag_v1.1.1.env',
-      {
-        images: ['org/app'],
-        labels: [
-          "maintainer=CrazyMax",
-          "org.opencontainers.image.title=MyCustom=Title",
-          "org.opencontainers.image.description=Another description",
-          "org.opencontainers.image.vendor=MyCompany",
-        ],
-      } as Inputs,
-      {
-        "target": {
-          "docker-metadata-action": {
-            "tags": [
-              "org/app:v1.1.1",
-              "org/app:latest"
-            ],
-            "labels": {
-              "maintainer": "CrazyMax",
-              "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
-              "org.opencontainers.image.description": "Another description",
-              "org.opencontainers.image.licenses": "MIT",
-              "org.opencontainers.image.revision": "860c1904a1ce19322e91ac35af1ab07466440c37",
-              "org.opencontainers.image.source": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.title": "MyCustom=Title",
-              "org.opencontainers.image.url": "https://github.com/octocat/Hello-World",
-              "org.opencontainers.image.vendor": "MyCompany",
-              "org.opencontainers.image.version": "v1.1.1"
-            },
-            "args": {
-              "DOCKER_META_IMAGES": "org/app",
-              "DOCKER_META_VERSION": "v1.1.1",
-            }
-          }
-        }
-      }
     ]
   ])('given %p with %p event', async (name: string, envFile: string, inputs: Inputs, exBakeDefinition: unknown) => {
     process.env = dotenv.parse(fs.readFileSync(path.join(__dirname, 'fixtures', envFile)));
@@ -4020,7 +4123,7 @@ describe('bake', () => {
     const repo = await toolkit.github.repoData();
     const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
 
-    const bakeFile = meta.getBakeFile();
+    const bakeFile = meta.getBakeFileTagsLabels();
     expect(JSON.parse(fs.readFileSync(bakeFile, 'utf8'))).toEqual(exBakeDefinition);
   });
 });

action.yml

@@ -44,10 +44,14 @@ outputs:
     description: 'Generated Docker tags'
   labels:
     description: 'Generated Docker labels'
-  bake-file:
-    description: 'Bake definiton file'
   json:
     description: 'JSON output of tags and labels'
+  bake-file-tags:
+    description: 'Bake definition file with tags'
+  bake-file-labels:
+    description: 'Bake definition file with labels'
+  bake-file:
+    description: 'Bake definition file with tags and labels'
 
 runs:
   using: 'node20'

src/main.ts

@@ -81,11 +81,16 @@ actionsToolkit.run(
       setOutput('json', JSON.stringify(jsonOutput));
     });
 
-    // Bake file definition
+    // Bake files
-    const bakeFile: string = meta.getBakeFile();
+    for (const kind of ['tags', 'labels']) {
-    await core.group(`Bake file definition`, async () => {
+      const bakeFile: string = meta.getBakeFile(kind);
+      await core.group(`Bake file definition (${kind})`, async () => {
         core.info(fs.readFileSync(bakeFile, 'utf8'));
-      setOutput('bake-file', bakeFile);
+        setOutput(`bake-file-${kind}`, bakeFile);
       });
     }
+
+    // Bake file with tags and labels
+    setOutput(`bake-file`, meta.getBakeFileTagsLabels());
+  }
 );

src/meta.ts

@@ -494,7 +494,33 @@ export class Meta {
     };
   }
 
-  public getBakeFile(): string {
+  public getBakeFile(kind: string): string {
+    switch (kind) {
+      case 'tags':
+        return this.generateBakeFile(kind, {
+          tags: this.getTags(),
+          args: {
+            DOCKER_META_IMAGES: this.getImageNames().join(','),
+            DOCKER_META_VERSION: this.version.main
+          }
+        });
+      case 'labels':
+        return this.generateBakeFile(kind, {
+          labels: this.getLabels().reduce((res, label) => {
+            const matches = label.match(/([^=]*)=(.*)/);
+            if (!matches) {
+              return res;
+            }
+            res[matches[1]] = matches[2];
+            return res;
+          }, {})
+        });
+      default:
+        throw new Error(`Unknown bake file type: ${kind}`);
+    }
+  }
+
+  public getBakeFileTagsLabels(): string {
     const bakeFile = path.join(ToolkitContext.tmpDir(), 'docker-metadata-action-bake.json');
     fs.writeFileSync(
       bakeFile,
@@ -522,7 +548,12 @@ export class Meta {
         2
       )
     );
+    return bakeFile;
+  }
 
+  private generateBakeFile(name: string, dt): string {
+    const bakeFile = path.join(ToolkitContext.tmpDir(), `docker-metadata-action-bake-${name}.json`);
+    fs.writeFileSync(bakeFile, JSON.stringify({target: {[this.inputs.bakeTarget]: dt}}, null, 2));
     return bakeFile;
   }