Adding continuous integration for website

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

@@ -56,6 +56,29 @@ jobs:
           tags: ${{ env.GITHUB_REF_SLUG }}
           add_git_labels: true
 
+  build-website:
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      # Create a slugified value of the branch
+      - uses: rlespinasse/github-slug-action@master
+
+      - name: "Build and push back image"
+        uses: docker/build-push-action@v1
+        with:
+          dockerfile: landing_page/Dockerfile
+          path: landing_page/
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          repository: thecodingmachine/workadventure-website
+          tags: ${{ env.GITHUB_REF_SLUG }}
+          add_git_labels: true
+
   deeploy:
     needs:
       - build-front