Add container image build and release job to GHA

.github/workflows/test-and-build.yml

@@ -63,9 +63,43 @@ jobs:
           QT_QPA_PLATFORM: offscreen
 
 
-  build:
+  # TODO: Consider extracting everything below this line to a separate workflow
+  # which is triggered by pushes to the default branch and GitHub releases.
+  build-and-release-image:
     runs-on: "ubuntu-latest"
     needs: ["test"]
+    # if: "github.ref_type == 'tag' || github.ref == github.event.repository.default_branch"
+    if: "github.ref_type == 'tag' || github.ref_type = 'branch'"
+    env:
+      IMAGE_NAME: "nsidc/noaa-web-server"
+      IMAGE_TAG: "${{ github.ref_type == 'branch' && 'latest' || github.ref_name }}"
+    steps:
+      - name: "Build Docker image"
+        run: |
+          docker build -t "${IMAGE_NAME}:${IMAGE_TAG}" .
+
+      - name: "DockerHub login"
+        uses: "docker/login-action@v2"
+        with:
+          username: "${{secrets.DOCKER_USER}}"
+          password: "${{secrets.DOCKER_PASS}}"
+
+      - name: "GHCR login"
+        uses: "docker/login-action@v2"
+        with:
+          registry: "ghcr.io"
+          username: "${{ github.repository_owner }}"
+          password: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: "Release to DockerHub and GHCR"
+        run: |
+          docker push "${IMAGE_NAME}:${IMAGE_TAG}"
+          docker push "ghcr.io/${IMAGE_NAME}:${IMAGE_TAG}"
+
+
+  build-package:
+    runs-on: "ubuntu-latest"
+    needs: ["build-and-release-image"]
     if: "github.ref_type == 'tag'"
     steps:
       - name: "Trigger Jenkins to build QGreenland Core"