inital commit

- build , publish stages

.github/workflows/github-actions-demo.yml

@@ -0,0 +1,83 @@
+name: Maven Build and Docker Image deploy
+on: [push]
+
+env:
+  ACTIONS_ALLOW_UNSECURE_COMMANDS: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    outputs:
+      output1:  ${{ steps.nextVersion.outputs.next_version }}
+    steps:
+
+      - name: repo checkout
+        uses: actions/checkout@v4
+
+      - name: Version increase
+        working-directory: ./myapp 
+        run: |
+          version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
+          next_version=$(echo $version | awk -F'[.-]' '{print $1"."$2"."$3+1}')
+          mvn versions:set -DnewVersion=$next_version
+
+      - name: Compile Code and Package Artifact
+        working-directory: ./myapp 
+        run: |
+          mvn clean package
+
+      - name: Create Artifact Item
+        uses: actions/upload-artifact@v3
+        with:
+          name: my-artifact
+          path: ${{ github.workspace }}/myapp/target/*.jar
+
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: build
+    env:
+      NEXT_VERSION: ${{ needs.build.outputs.version }}
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - uses: actions/download-artifact@master
+        with:
+          name: my-artifact
+          path: ${{ github.workspace }}/myapp/target/
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_UNAME }}
+          password: ${{ secrets.DOCKER_KEY }}
+
+      - name: Build Docker image and push
+        uses: docker/build-push-action@v4
+        with:
+            context: .
+            file: Dockerfile
+            push: true
+            tags:  vladipiko/app:latest
+
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: publish
+    steps:
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_UNAME }}
+          password: ${{ secrets.DOCKER_KEY }}
+      - name: Download and Run Docker Image
+        run: |
+          docker pull app:latest
+          docker run --rm -it -p 8080:8080 app:latest

Dockerfile

@@ -0,0 +1,8 @@
+FROM openjdk:11-jre-slim
+RUN useradd -u 10001 myuser
+USER myuser
+COPY myapp/target/myapp-*.jar /app.jar
+RUN ls -l
+EXPOSE 8080
+ENTRYPOINT ["java", "-jar", "app.jar"]
+# CMD ["java", "-jar", "app.jar"]

myapp/pom.xml

@@ -6,7 +6,7 @@
 
   <groupId>com.myapp</groupId>
   <artifactId>myapp</artifactId>
-  <version>1.0-SNAPSHOT</version>
+  <version>1.0-0</version>
 
   <name>myapp</name>
   <!-- FIXME change it to the project's website -->

myapp/src/main/java/com/myapp/App.java

@@ -8,6 +8,6 @@ public class App
 {
     public static void main( String[] args )
     {
-        System.out.println( "Hello World!" );
+        System.out.println( "Hello World! Vladimir" );
     }
 }