Working directory is not applying to docker/build-push-action@v2

[dszymczuk]

Troubleshooting

I saw that docker/build-push-action@v2 is not applying a working-directory setup.
Here is my GitHub action file:

name: Push docker images

on:
  push:

defaults:
  run:
    working-directory: ./api # here I setup working directory for flow

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      -
        name: Build Docker Image - API
        uses: docker/build-push-action@v2
        with:
          file: dockerfiles/api/Dockerfile
          context: .
          push: false
          tags: myimage:latest

Expected behaviour

Build image without error

Actual behaviour

/usr/bin/docker buildx build --tag myimage:latest --iidfile /tmp/docker-build-push-ed2Vyp/iidfile --file dockerfiles/api/Dockerfile .

error: could not find dockerfiles/api: stat dockerfiles/api: no such file or directory
Error: buildx call failed with: error: could not find dockerfiles/api: stat dockerfiles/api: no such file or directory

Fix

To fix this I have to pass file and context as path from root. In this case is:

name: Push docker images

on:
  push:

defaults:
  run:
    working-directory: ./api

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Login to Docker Repository
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
          registry: ${{ secrets.DOCKER_REPOSITORY }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      -
        name: Build Docker Image - API
        uses: docker/build-push-action@v2
        with:
          file: api/dockerfiles/api/Dockerfile
          context: ./api
          push: false
          tags: myimage:latest

With this fix I can build my image.

[crazy-max]

@dszymczuk

I saw that docker/build-push-action@v2 is not applying a working-directory setup.

defaults.run only applies to jobs.<job_id>.steps[*].run as stipulated in the doc.