added GH Action for docker

Author: SilasCloud

.github \ workflows/workflows/build-docker.yaml

@@ -0,0 +1,15 @@
+name: Publish Docker image to Docker Hub
+on:
+  [workflow_dispatch:]
+
+jobs:
+  publish_images:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build image
+        run: docker build ./api/ -t echelonkay/devops-qr-code-api:latest
+      - name: push image to docker hub
+        run: |
+            docker push echelonkay/devops-qr-code-api:latest