add workflow

.gitea/workflows/build-and-push.yml

@@ -0,0 +1,38 @@
+name: Build and Push Containers
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push each container
+        run: |
+          for dir in */; do
+            dir="${dir%/}"
+            if [ -f "$dir/Dockerfile" ]; then
+              echo "Building $dir..."
+              docker buildx build \
+                --platform linux/amd64,linux/arm64 \
+                --tag ${{ secrets.DOCKERHUB_USERNAME }}/${dir}:latest \
+                --tag ${{ secrets.DOCKERHUB_USERNAME }}/${dir}:${{ github.sha }} \
+                --push \
+                "$dir"
+            fi
+          done

pandoc-pdf/Dockerfile

@@ -0,0 +1,3 @@
+FROM pandoc/core:latest
+
+RUN apk add --no-cache git nodejs texlive-full