我的 docker-compose 文件有什么问题

Question

Can anybody help me to understand what is wrong with my docker-compose file:

version: "3.7"

services:
  postgres:
    image: postgres:latest
    container_name: postgres
    restart: always
    volumes:
      - db-data:/var/lib/postgressql/data 
    environment:
      POSTGRES_PASSWORD: docker 
    ports:
      - "5400:5432" 

  api:
    restart: always
    build: ./api
    ports:
      - "5000:5000"
    volumes: 
      - .:/api
    entrypoint: ["python3", "app.py"]

  parser:
    restart: always
    build: ./parser
    ports:
      - 8000:8000
    volumes: 
      - .:/parser
    depends_on:
      - postgres
    entrypoint: ["python3", "run.py"]
volumes:
  db-data:
  api-data:
  parser-data:

Dockerfile:

FROM python:3.8.5-buster
ENV APP_ROOT /src
RUN mkdir ${APP_ROOT}
WORKDIR ${APP_ROOT}}
ADD . ${APP_ROOT}
RUN pip install --upgrade pip
RUN pip3 install -r ${APP_ROOT}/requirements.txt  
EXPOSE 8000

Terminal reply: parser_1 | python3: can't open file 'run.py': [Errno 2] No such file or directory

My project tree

Answer 1

do the following inside your project folder to find the relative path of your run.py:

find . -name 'run.py' -printf "%P\n"

then take that result and update the entrypoint in your docker file:

 entrypoint: ["python3", "relative_filepath_from_find_command_above_goes_here"]

Answer 2

You haven't mapped your local files to your parser container with volume: like you did in other services. No such file or directory , it can't be found in your container.

EDIT: This is a simple example I've made with 3 files:

# Dockerfile
FROM python:3.7
RUN mkdir /app
COPY ./test.py /app
WORKDIR  /app

# docker-compose.yml
version: "3.7"
services:
    parser:
        build: .
        restart: always
        ports:
          - 8000:8000
        entrypoint: ["python3", "test.py"]

# test.py
print("ok")