build(ci): added Docker build workflow

.github/workflows/docker.yml

@@ -0,0 +1,55 @@
+name: Docker
+# Docker workflow allows the creation and publishing of new Bondscape website Docker tags.
+# This workflow is run only when a new commit is pushed to main, or a new tag is created.
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+
+jobs:
+  Build-and-Publish:
+    name: Build and publish Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v3
+
+      - name: Login to DockerHub 👤
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Prepare tags 🏷️
+        id: prep
+        run: |
+          DOCKER_IMAGE=desmoslabs/mooncake-website
+          VERSION=edge
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/}
+          elif [[ $GITHUB_REF == refs/heads/* ]]; then
+            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+          elif [[ $GITHUB_REF == refs/pull/* ]]; then
+            VERSION=pr-${{ github.event.number }}
+          fi
+          TAGS="${DOCKER_IMAGE}:${VERSION},${DOCKER_IMAGE}:latest"
+          if [ "${{ github.event_name }}" = "push" ]; then
+            TAGS="$TAGS,${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
+          fi
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+          echo "tags=${TAGS}" >> $GITHUB_OUTPUT
+          echo "created=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
+
+      - name: Build and push 📤
+        uses: docker/build-push-action@v4
+        with:
+          push: false
+          tags: ${{ steps.prep.outputs.tags }}
+          labels: |
+            org.opencontainers.image.source=${{ github.event.repository.html_url }}
+            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
+            org.opencontainers.image.revision=${{ github.sha }}