Created CICD yaml file for creating docker image and pushing into Doc…

…kerhub

.github/workflows/main.yml

@@ -0,0 +1,27 @@
+name: cicd-workflow to create docker image and upload into Dockerhub
+on:
+  push:
+    branches: [ "master" ]
+jobs:
+  job1:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up JDK 17
+      uses: actions/setup-java@v2
+      with:
+        distribution: 'adopt'
+        java-version: '17'
+    - name: Build with Maven
+      run: mvn clean install
+    - name: Login to Docker Hub
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    - name: Build and push Docker image
+      env:
+        IMAGE_TAG: ${{ github.sha }}
+      run: |
+        docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/myspringbootapp:${IMAGE_TAG} .
+        docker push ${{ secrets.DOCKERHUB_USERNAME }}/myspringbootapp:${IMAGE_TAG}