Adds readme content (#21)

#### 📖 Summary

- adds section about content
- adds missing extension install

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] CI pipeline tests
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

<!-- Add your test details or justification for missing tests here. -->

#### 📚 Additional Notes

<!-- A place for additional detail notes. -->

Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: CodeServer/arkanum#21

README.md

@@ -32,16 +32,17 @@ The container is based on the latest `linuxserver/code-server` image.
 
 ### 🚀 Starship prompt
 
-The [Starship](starship.rs) prompt is added an enabled as default. Default config uses Emojis and FiraCode icons.
+The [Starship](starship.rs) prompt is added and enabled as default. Default config uses Emojis and FiraCode icons.
 
 ### 🔱 git config
 
-Adds default system config with:
+Adds default git system config file with:
 
+- code-server as default editor.
+- disabled `aurocrlf`.
 - enabled plain credential store for remote.
-- enabled bash completion for git command.
-- added git log helper `lg1` + `lg2`
-
+- added git log helper `lg1` + `lg2`.
+- enabled bash completion for git command in integrated bash terminal.
 > 💡 See [gitconfig-system](./gitconfig-system) for details.
 
 ### 🧙 Added `arkanum` helper script
@@ -60,28 +61,56 @@ This helps reducing the image size.
     golang        Installs golang 1.19.3.
     nodejs        Installs latest NodeJs LTS version.
     powershell    Installs latest PowerShell LTS version.
-  --disable-motd     Disables hint in new bash terminal.
+  --disable-motd         Disables hint in new bash terminal.
   --reset-codesetting    Sets VS Code user setting with basic (Fira Code).
-  -h              Prints this help message.
+  -h                     Prints this help message.
 
   Example 1: arkanum dotnet
   Example 2: arkanum golang nodejs
   Example 3: arkanum --disable-motd
 ```
+### 📝 Fira Code (NerdFont patched)
+
+Added FiraCode as default font in editor and integrated terminal. The font files are embedded and can be used without local installation.
+
+### VSCode default settings
+
+If your start the container or log in the first time, a default config file is deployed.
+
+This user setting defines the following stuff:
+
+- Use compact menu bar to avoid users with multiple menu bars.
+- Use *One Dark Pro Darker* theme
+- Use *vscode-icons* icon set
+- Set 'FiraCode' as default font in editor.
+  - Tries to use alternate font names for FiraCode if its locally available.
+- Sets 'FiraCode' mono variant in terminal to enable icons used by starshop prompt.
+- Enables font ligatures
+- Enables *auto save* and *format on save*.
+- Disables auto update for extension.
+- Disables VScode telemetry
+- Disable confirm message for sync branches.
+
+Additionally we install these extensions on container startup:
+
+- [One Dark Pro](https://open-vsx.org/extension/zhuangtongfa/material-theme) theme
+- [vscode-icons](https://open-vsx.org/extension/vscode-icons-team/vscode-icons) icon set
+- [Gitlens](https://open-vsx.org/extension/eamodio/gitlens)
 
 ## 💳 Credits
 
 Akranum is based on the following projects and wouldn't be possible without:
 
-- [microsoft/vscode](https://github.com/microsoft/vscode) - Visual Studio Code, OSS
+- [microsoft/vscode](https://github.com/microsoft/vscode) - Visual Studio Code, OSS. `[MIT]`
 - [coder/code-server](https://github.com/coder/code-server) - VSCode on a remote server, accessible through the browser. `[MIT]`
-- [linuxserver/docker-code-server](https://github.com/linuxserver/docker-code-server) - docker image based for *coder/code-server*
-- A huge thanks to tuanpham for sharing his [code-server font patch](https://github.com/tuanpham-dev/code-server-font-patch). `[GPL-3.0]`
+- [linuxserver/docker-code-server](https://github.com/linuxserver/docker-code-server) - docker image based for *coder/code-server*. `[GPL-3.0]`
+- A huge thanks to tuanpham for sharing his [code-server font patch](https://github.com/tuanpham-dev/code-server-font-patch).
 
 ## ⚖️ License (AGPLv3)
 
 ![AGPL](https://www.gnu.org/graphics/agplv3-155x51.png)
 
+```
 Arkanum - Code-Server container optimized for daily use.
 Copyright (C) 2022  "OCram85 <me@ocram85.com>"
 
@@ -97,3 +126,4 @@ GNU Affero General Public License for more details.
 
 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
+```

arkanum

@@ -129,7 +129,7 @@ function instPwsh() {
 
 function instGiteaTools() {
   say "Installing Gitea tools..." "Gitea"
-  sudo curl -sSl https://dl.gitea.io/changelog-tool/main/changelog-main-linux-amd64 -o /usr/bin/changelog
+  sudo curl -fsSL https://dl.gitea.io/changelog-tool/main/changelog-main-linux-amd64 -o /usr/bin/changelog
   sudo chmod +x /usr/bin/changelog
   say "'changelog' command installed." "Gitea"
   say "done." "Gitea"
@@ -137,7 +137,33 @@ function instGiteaTools() {
 
 function setCodeSettings() {
   CODEFILE="$HOME/data/User/settings.json"
-  say "Setting VScode base settings.($CODEFILE)"
+  say "Downloading required extensions...." "VSCode"
+  # Gitlens
+  say "Downloading 'gitlens'..." "VSCode"
+  curl -fsSL https://open-vsx.org/api/eamodio/gitlens/13.1.1/file/eamodio.gitlens-13.1.1.vsix -o /tmp/eamodio.gitlens-13.1.1.vsix
+  say "Installing 'gitlens'..." "VSCode"
+  install-extension /tmp/eamodio.gitlens-13.1.1.vsix
+  say "Cleaning up 'gitlens' install files" "VSCode"
+  rm -f /tmp/eamodio.gitlens-13.1.1.vsix
+
+  # OneDarkPro
+  say "Downloading 'One Dark Pro' theme..." "VSCode"
+  curl -fsSL https://open-vsx.org/api/zhuangtongfa/material-theme/3.15.6/file/zhuangtongfa.material-theme-3.15.6.vsix -o /tmp/zhuangtongfa.material-theme-3.15.6.vsix
+  say "Installing 'One Dark Pro' theme..." "VSCode"
+  install-extension /tmp/zhuangtongfa.material-theme-3.15.6.vsix
+  say "Cleaning up 'One Dark Pro' install files" "VSCode"
+  rm -f /tmp/zhuangtongfa.material-theme-3.15.6.vsix
+
+  # vscode-icons
+  say "Downloading 'vscode-icons' theme..." "VSCode"
+  curl -fsSL https://open-vsx.org/api/vscode-icons-team/vscode-icons/12.0.1/file/vscode-icons-team.vscode-icons-12.0.1.vsix -o /tmp/vscode-icons-team.vscode-icons-12.0.1.vsix
+  say "Installing 'vscode-icons' theme..." "VSCode"
+  install-extension /tmp/vscode-icons-team.vscode-icons-12.0.1.vsix
+  say "Cleaning up 'vscode-icons' install files" "VSCode"
+  rm -f /tmp/vscode-icons-team.vscode-icons-12.0.1.vsix
+
+  # VSCode user settings file
+  say "Setting VScode base settings.($CODEFILE)" "VSCode"
   cat <<EOF | tee "$CODEFILE"
 {
   "window.menuBarVisibility": "compact",
@@ -152,6 +178,7 @@ function setCodeSettings() {
   "telemetry.telemetryLevel": "off"
 }
 EOF
+  say "done." "VSCode"
 }
 
 function main() {