Github actions build jar with maven and use for docker image building

Question

i want that a git push should trigger mvn clean package and build a docker image with the build jar. Sadly I get following error at the image building

Step 2/4 : ADD target/de-sy-file.jar de-sy-file.jar
ADD failed: stat /var/lib/docker/tmp/docker-builder601875986/target/de-sy-file.jar: no such file or directory
##[error]Process completed with exit code 1.

Can anybody tell me where I find the builded jar?

Action.yml

on:
  push:
    branches:
      - master

name: Push to Amazon ECR

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v1
    - name: Set up JDK 1.8
      uses: actions/setup-java@v1
      with:
        java-version: 1.8
    - name: Build with Maven
      run:
        mvn clean package --file pom.xml

  deploy:
    name: Deploy
    needs: [build]
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v1

    - name: Configure AWS credentials
      uses: aws-actions/configure-aws-credentials@v1
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        aws-region: eu-central-1

    - name: Login to Amazon ECR
      id: login-ecr
      uses: aws-actions/amazon-ecr-login@v1

    - name: Build, tag, and push image to Amazon ECR
      id: build-image
      env:
        ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
        ECR_REPOSITORY: de-sy-file
        IMAGE_TAG:  latest
      run: |
        # Build a docker container and
        # push it to ECR so that it can
        # be deployed to ECS.
        docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
        docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
        echo "::set-output name=image::$ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG"

Answer 1

I found a solution to download and upload an artifact.

My new action.yml :

# This workflow will build and push a new container image to Amazon ECR,
# and then will deploy a new task definition to Amazon ECS, on every push
# to the master branch.
#
# To use this workflow, you will need to complete the following set-up steps:
#
# 1. Create an ECR repository to store your images.
#    For example: `aws ecr create-repository --repository-name my-ecr-repo --region us-east-2`.
#    Replace the value of `ECR_REPOSITORY` in the workflow below with your repository's name.
#    Replace the value of `aws-region` in the workflow below with your repository's region.
#
# 2. Create an ECS task definition, an ECS cluster, and an ECS service.
#    For example, follow the Getting Started guide on the ECS console:
#      https://us-east-2.console.aws.amazon.com/ecs/home?region=us-east-2#/firstRun
#    Replace the values for `service` and `cluster` in the workflow below with your service and cluster names.
#
# 3. Store your ECS task definition as a JSON file in your repository.
#    The format should follow the output of `aws ecs register-task-definition --generate-cli-skeleton`.
#    Replace the value of `task-definition` in the workflow below with your JSON file's name.
#    Replace the value of `container-name` in the workflow below with the name of the container
#    in the `containerDefinitions` section of the task definition.
#
# 4. Store an IAM user access key in GitHub Actions secrets named `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`.
#    See the documentation for each action used below for the recommended IAM policies for this IAM user,
#    and best practices on handling the access key credentials.

on:
  push:
    branches:
      - master

name: Push to Amazon ECR

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v1
    - name: Set up JDK 1.8
      uses: actions/setup-java@v1
      with:
        java-version: 1.8
    - name: Build with Maven
      run:
        mvn clean package --file pom.xml

    - uses: actions/checkout@v1

    - run: mkdir -p target/

    - run: echo hello > target/de-sy-file.jar

    - uses: actions/upload-artifact@v1
      with:
       name: de-sy-file
       path: target/

  deploy:
    name: Deploy
    needs: [build]
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v1


    - uses: actions/checkout@v1

    - uses: actions/download-artifact@v1
      with:
          name: de-sy-file
          path: target/

    - run: cat target/de-sy-file.jar
    - name: Configure AWS credentials
      uses: aws-actions/configure-aws-credentials@v1
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        aws-region: eu-central-1

    - name: Login to Amazon ECR
      id: login-ecr
      uses: aws-actions/amazon-ecr-login@v1

    - name: Build, tag, and push image to Amazon ECR
      id: build-image
      env:
        ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
        ECR_REPOSITORY: de-sy-file
        IMAGE_TAG:  latest
      run: |
        # Build a docker container and
        # push it to ECR so that it can
        # be deployed to ECS.
        docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
        docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
        echo "::set-output name=image::$ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG"

https://github.com/actions/download-artifact