docker-compose can't find the file

Question

I have created below docker file and the intention is to run it in docker-compose.

FROM python:3.7.5-slim
WORKDIR /usr/src/app
RUN python -m pip install boto3
COPY test_cf_create_or_update.py .
ENTRYPOINT ["python3"]
CMD [@]

Now after the build, when I run it I have expected outcome.

docker build -t test .
docker run -it --rm test  test_cf_create_or_update.py

However, If I do want to recreate same via docker-compose, it's saying

setup-application_1  | python3: can't open file '/usr/src/app/test_cf_create_or_update.py': [Errno 2] No such file or directory
localstack_setup-application_1 exited with code 2

Sample of docker-compose looks like below:

setup-application:
    build: .
    volumes:
      - /tmp/localstack/application:/usr/src/app
    environment:
      - AWS_ACCESS_KEY_ID=dummyaccess
      - AWS_SECRET_ACCESS_KEY=dummysecret
      - AWS_DEFAULT_REGION=eu-west-1
    entrypoint: python3
    command: /usr/src/app/test_cf_create_or_update.py
    networks:
      - my_localstack_network
    depends_on:
      - localstack

Can anyone assist me in where I'm doing wrong?

Answer 1

Two solutions:

Remove volume from docker-compose and

FROM python:3.7.5-slim
COPY test_cf_create_or_update.py .
WORKDIR /usr/src/app
RUN python -m pip install boto3
ENTRYPOINT ["python3"]
CMD [@]

Or keep volume in docker-compose and

FROM python:3.7.5-slim
WORKDIR /usr/src/app
RUN python -m pip install boto3
ENTRYPOINT ["python3"]
CMD [@]

Make sure your test_cf_create_or_update.py is in /tmp/localstack/application folder.