👷 Add CI workflow for building container image

.forgejo/workflows/ci.yaml

@@ -0,0 +1,38 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - "master"
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    services:
+      registry:
+        image: registry:2
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Docker for QEMU
+        uses: https://github.com/papodaca/install-docker-action@main
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: code.f2n.me
+          username: ${{ secrets.MY_GITEA_USERNAME }}
+          password: ${{ secrets.MY_GITEA_TOKEN }}
+      - name: Build and push to local registry
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: code.f2n.me/finn/matrix-bot-praying-times:latest
+      - name: Inspect
+        run: |
+          docker buildx imagetools inspect code.f2n.me/finn/matrix-bot-praying-times:latest