Add Docker build action

kruton · orgrim · commit cddabc20000f · 2023-09-09T20:55:26.000+02:00
This will build a docker package and push it to the GitHub package
repository.
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
@@ -0,0 +1,68 @@
+name: Docker
+
+on:
+  push:
+    branches: [ "master" ]
+    tags:
+      - v*
+  pull_request:
+    branches: [ "master" ]
+  release:
+    types: [ "published" ]
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: pg_back
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3.5.3
+
+      - id: prep
+        if: "startsWith(github.ref, 'refs/tags/v')"
+        run: |
+          echo ::set-output name=tag::${GITHUB_REF#refs/tags/v}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2.2.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2.9.1
+
+      - name: Cache Docker layers
+        uses: actions/cache@v3.3.1
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+
+      - name: Login to GHCR
+        uses: docker/login-action@v2.2.0
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Push to GitHub Packages
+        uses: docker/build-push-action@v4.1.1
+        with:
+          context: .
+          tags: ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ steps.prep.outputs.tag || 'latest' }}
+          push: ${{ github.event_name != 'pull_request' }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+
