feat: added ruby on bookworm image

Signed-off-by: Louis Vallat <contact@louis-vallat.dev>

.gitea/workflows/publish_ruby_bookworm.yml

@@ -0,0 +1,36 @@
+name: "Build and publish \"Ruby on Bookworm\" image"
+defaults:
+  run:
+    shell: sh
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - ruby-bookworm/**
+
+jobs:
+  publish-image:
+    name: "Build and publish"
+    runs-on: alpine
+    steps:
+      - name: Install dependencies
+        run: apk add git docker
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.louis-vallat.dev
+          username: louis
+          password: ${{ secrets.CONTAINER_REGISTRY_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: ./ruby-bookworm
+          file: ./ruby-bookworm/Dockerfile
+          platforms: |
+            linux/amd64
+          push: true
+          tags: |
+            git.louis-vallat.dev/louis/action-images:ruby-bookworm

ruby-bookworm/Dockerfile

@@ -0,0 +1,6 @@
+FROM node:20-bookworm@sha256:48db4f6ea21d134be744207225753a1730c4bc1b4cdf836d44511c36bf0e34d7
+
+RUN apt-get update && \
+    apt-get install git -y && \
+    apt-get install ruby-full -y && \
+    rm -rf /var/lib/apt/lists/*