Merge pull request #23 from florianm/21-docker

new: Dockerfile and GHA

.github/workflows/docker.yml

@@ -0,0 +1,48 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/master/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+# Publish `v1.2.3` tags as releases.
+on:
+  push:
+    tags:
+      - v*
+
+name: docker
+
+env:
+  IMAGE_NAME: odkbuild2xlsform
+
+jobs:
+  # Push image to GitHub Packages.
+  # See also https://docs.docker.com/docker-hub/builds/
+  push:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build image
+        run: docker build . --file Dockerfile --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"
+
+      - name: Log in to registry
+        # This is where you will update the PAT to GITHUB_TOKEN
+        run: echo "${{ secrets.GH_PAT }}" | docker login ghcr.io -u ${{ secrets.GH_ACTOR }} --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+
+          # Change all uppercase to lowercase
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+          # Strip "v" prefix from tag name
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "main" ] && VERSION=latest
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION

Dockerfile

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+FROM node:10.19.0
+LABEL author="ODK"
+LABEL maintainer="ODK Build maintainers"
+LABEL description="Generate an XLSForm from an ODK Build Xform"
+
+WORKDIR /srv/odkbuild2xlsform
+COPY . .
+RUN make
+EXPOSE 8686
+CMD ["node", "lib/server.js"]