build: add Gitea workflows and Dockerfile for images

.gitea/workflows/build.yml

@@ -0,0 +1,91 @@
+name: "Build Runner Images"
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches:
+      - "main"
+
+jobs:
+  base:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Login to Registry
+        uses: "actions/docker-login@v3"
+        with:
+          registry: git.kjan.de
+          username: ${{ secrets.DEPLOY_USER }}
+          password: ${{ secrets.DEPLOY_SECRET }}
+      - name: Build and push base image
+        id: build_base
+        uses: "actions/docker-build-push@v5"
+        with:
+          context: "{{defaultContext}}:images/actions/act"
+          push: true
+          tags: |
+            git.kjan.de/actions/runner-basic:latest
+            git.kjan.de/actions/runner-basic:${{ github.run_number }}
+
+  extended-latest:
+    runs-on: "docker"
+    needs:
+      - base
+    strategy:
+      matrix:
+        language: ["go", "js", "protobuf", "oas", "just"]
+    steps:
+      - name: Login to Registry
+        uses: "actions/docker-login@v3"
+        with:
+          registry: git.kjan.de
+          username: ${{ secrets.DEPLOY_USER }}
+          password: ${{ secrets.DEPLOY_SECRET }}
+
+      - name: Build and push ${{ matrix.language }} image
+        uses: "actions/docker-build-push@v5"
+        with:
+          context: "{{defaultContext}}:images/actions/${{ matrix.language }}"
+          push: true
+          tags: |
+            git.kjan.de/actions/runner-${{ matrix.language }}:latest
+            git.kjan.de/actions/runner-${{ matrix.language }}:${{ github.run_number }}
+
+  extended-versioned:
+    runs-on: "docker"
+    needs:
+      - base
+    strategy:
+      matrix:
+        include:
+          - language: php
+            version: 8.2
+          - language: php
+            version: 8.3
+          - language: lua
+            version: 5.3
+          - language: lua
+            version: 5.4
+          - language: java
+            version: 8
+          - language: java
+            version: 17
+          - language: java
+            version: 21
+    steps:
+      - name: Login to Registry
+        uses: "actions/docker-login@v3"
+        with:
+          registry: git.kjan.de
+          username: ${{ secrets.DEPLOY_USER }}
+          password: ${{ secrets.DEPLOY_SECRET }}
+
+      - name: Build and push ${{ matrix.language }} {{ matrix.version }} image
+        uses: "actions/docker-build-push@v5"
+        with:
+          context: "{{defaultContext}}:images/actions/${{ matrix.language }}"
+          push: true
+          build-args: PACKAGE_VERSION=${{ matrix.version }}
+          tags: |
+            git.kjan.de/actions/runner-${{ matrix.language }}-${{ matrix.version }}:latest
+            git.kjan.de/actions/runner-${{ matrix.language }}-${{ matrix.version }}:${{ github.run_number }}