WIP

.github/workflows/test-server-command.yml

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+name: Publish PR Docker Image
+on:
+  repository_dispatch:
+    types: [test-server-command]
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dump the client payload context
+        env:
+          PAYLOAD_CONTEXT: ${{ toJson(github.event.client_payload) }}
+        run: echo "$PAYLOAD_CONTEXT"
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.client_payload.pull_request.head.sha }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Set variables
+        id: prep
+        run: |
+          DOCKER_IMAGE=test-server
+          REPOSITORY="$(echo $GITHUB_REPOSITORY | tr '[:upper:]' '[:lower:]')" # Repository name must be lowercase in image tags
+          TAGS="ghcr.io/${REPOSITORY}/${DOCKER_IMAGE}:${{ github.event.client_payload.pull_request.head.sha }}"
+          echo ::set-output name=tags::${TAGS}
+      - name: Log in to GitHub Docker Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build container image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.prep.outputs.tags }} #