Docker组合，命令：和命令:-[重复]之间的区别

Question

我一直试图理解command：和command：-在我的docker组合文件中的区别：

ENV PYTHONUNBUFFERED=1
COPY requirements.txt .
COPY dbenv .
RUN python3 -m pip install pymysql
RUN pip install mysql-connector-python
RUN pip install openpyxl
RUN pip install lxml
RUN pip install -r requirements.txt
RUN pip install pandas
RUN pip install requests
RUN pip install beautifulsoup4
COPY . .
WORKDIR /MY_DATABASE

version: '3.6'

services:

  db:
    image: mysql:latest
    environment: 
      - MYSQL_ROOT_PASSWORD=postgres
      - MYSQL_DATABASE=webscrap
      - MYSQL_USER=django
      - MYSQL_PASSWORD=djangodb
    ports: 
      - 3306:3306
    restart: always
    # cap_add:
    #   - SYS_NICE

  scrapper:
    build:
      context: .
      dockerfile: dockerfile
    environment: 
      - MYSQL_ROOT_PASSWORD=postgres
      - MYSQL_DATABASE=webscrap
      - MYSQL_USER=django
      - MYSQL_PASSWORD=djangodb
      - MYSQL_PORT=3306
      - MYSQL_HOST=db
    # working_dir: /MY_DATABASE

    restart: always
    depends_on: 
      - db
    # command: python Security_table/initialize_securities_table.py
    working_dir: /MY_DATABASE
    command: 
      - python Security_table/initialize_securities_table.py

command: python Security_table/initialize_securities_table.py

command: 
  - python Security_table/initialize_securities_table.py

我在这里错过了什么？

Answer 1

您所尝试的语法将用于多个命令，这不是它的目标。

（1个入口点，1个命令）

https://docs.docker.com/compose/compose-file/compose-file-v3/#命令

command: python Security_table/initialize_securities_table.py

command: ["python", "Security_table/initialize_securities_table.py"]

command: ["/bin/bash", "/path/to/script/with/multiple/commands"]

例如，当您运行docker映像时：

docker run -it debian:10 /bin/bash

/bin/bash是命令部分。