update .github actions

.github/workflows/docker-image.yml

@@ -1,18 +1,24 @@
-name: Docker Image CI
+name: Build and Push Docker Image to Docker Hub
 
 on:
   push:
     branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
 
 jobs:
-
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v4
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
+
+    - name: login to docker registry
+      uses: docker/login-action@v3
+      with:
+        username: ${{secrets.DOCKERHUB_USERNAME}}
+        password: ${{secrets.DOCKERHUB_TOKEN}}
+
+    - name: build and push docker image to registry
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        push: true
+        tags: alvinleee/github-action-test:latest

.gitignore

@@ -0,0 +1 @@
+*.swp