created GitHub Action for building and deploying docker images (#114)

.github/workflows/docker-build.yml

@@ -0,0 +1,35 @@
+name: Docker Image CI/CD
+
+on:
+    push:
+        branches:
+            - 'main'
+    workflow_dispatch:
+
+jobs:
+  backend:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check repository
+        uses: actions/checkout@v4
+
+      - name: Get date for tagging
+        id: date
+        run: echo "date=$(date +'%Y%m%d%H%M%S')" >> $GITHUB_ENV
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push the Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/server/Dockerfile
+          push: true
+          tags: |
+            ${{ vars.DOCKERHUB_USERNAME }}/bluecrew-prod-server:latest
+            ${{ vars.DOCKERHUB_USERNAME }}/bluecrew-prod-server:${{ env.date }}