Bump minimum glibc to 2.28 (#6439)

At least, for the standalone and for anyone running on default Node 18.

If support for 2.17 is needed then one would need to build Node 18 with 2.17 and then build code-server with that version (specifically, the native npm modules).

.github/workflows/release.yaml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     needs: npm-version
-    container: "centos:7"
+    container: "centos:8"
     env:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
@@ -42,12 +42,10 @@ jobs:
 
       - name: Install development tools
         run: |
-          yum install -y epel-release centos-release-scl make
-          yum install -y devtoolset-9-{make,gcc,gcc-c++} jq rsync python3
-          # for keytar
-          yum install -y libsecret-devel
-          # for kerberos
-          yum install -y krb5-devel
+          cd /etc/yum.repos.d/
+          sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
+          sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
+          yum install -y gcc-c++ make jq rsync python3 libsecret-devel krb5-devel
 
       - name: Install nfpm and envsubst
         run: |
@@ -69,10 +67,8 @@ jobs:
       - name: Decompress npm package
         run: tar -xzf package.tar.gz
 
-      # NOTE: && here is deliberate - GitHub puts each line in its own `.sh`
-      # file when running inside a docker container.
       - name: Build standalone release
-        run: source scl_source enable devtoolset-9 && npm run release:standalone
+        run: npm run release:standalone
 
       - name: Install test dependencies
         run: SKIP_SUBMODULE_DEPS=1 yarn --frozen-lockfile
@@ -104,25 +100,7 @@ jobs:
           discussion_category_name: "📣 Announcements"
           files: ./release-packages/*
 
-  # NOTE@oxy:
-  # We use Ubuntu 16.04 here, so that our build is more compatible
-  # with older libc versions. We used to (Q1'20) use CentOS 7 here,
-  # but it has a full update EOL of Q4'20 and a 'critical security'
-  # update EOL of 2024. We're dropping full support a few years before
-  # the final EOL, but I don't believe CentOS 7 has a large arm64 userbase.
-  # It is not feasible to cross-compile with CentOS.
-
-  # Cross-compile notes: To compile native dependencies for arm64,
-  # we install the aarch64/armv7l cross toolchain and then set it as the default
-  # compiler/linker/etc. with the AR/CC/CXX/LINK environment variables.
-  # qemu-user-static on ubuntu-16.04 currently doesn't run Node correctly,
-  # so we just build with "native"/x86_64 node, then download arm64/armv7l node
-  # and then put it in our release. We can't smoke test the cross build this way,
-  # but this means we don't need to maintain a self-hosted runner!
-
-  # NOTE@jsjoeio:
-  # We used to use 18.04 until GitHub browned it out on December 15, 2022
-  # See here: https://github.com/actions/runner-images/issues/6002
+  # TODO: We should use the same CentOS image to cross-compile if possible?
   package-linux-cross:
     name: Linux cross-compile builds
     runs-on: ubuntu-20.04

docs/install.md

@@ -103,10 +103,9 @@ _exact_ same commands presented in the rest of this document.
 We recommend installing with `npm` when:
 
 1. You aren't using a machine with `amd64` or `arm64`.
-1. You are installing code-server on Windows
-1. You're on Linux with `glibc` < v2.17, `glibcxx` < v3.4.18 on `amd64`, `glibc`
-   < v2.23, or `glibcxx` < v3.4.21 on `arm64`.
-1. You're running Alpine Linux or are using a non-glibc libc. See
+2. You are installing code-server on Windows.
+3. You're on Linux with `glibc` < v2.28 or `glibcxx` < v3.4.21.
+4. You're running Alpine Linux or are using a non-glibc libc. See
    [#1430](https://github.com/coder/code-server/issues/1430#issuecomment-629883198)
    for more information.
 
@@ -123,8 +122,8 @@ node binary and node modules.
 We create the standalone releases using the [npm package](#npm), and we
 then create the remaining releases using the standalone version.
 
-The only requirement to use the standalone release is `glibc` >= 2.17 and
-`glibcxx` >= v3.4.18 on Linux (for macOS, there is no minimum system
+The only requirement to use the standalone release is `glibc` >= 2.28 and
+`glibcxx` >= v3.4.21 on Linux (for macOS, there is no minimum system
 requirement).
 
 To use a standalone release: