在一个容器内运行多个程序

参考官方文档说明 Run multiple services in a container

官方给出了如下的使用示例

用例01

my_wrapper_script.sh

#!/bin/bash

# Start the first process
./my_first_process &
  
# Start the second process
./my_second_process &
  
# Wait for any process to exit
wait -n
  
# Exit with status of process that exited first
exit $?

dockerfile

# syntax=docker/dockerfile:1
FROM ubuntu:latest
COPY my_first_process my_first_process
COPY my_second_process my_second_process
COPY my_wrapper_script.sh my_wrapper_script.sh
CMD ./my_wrapper_script.sh

用例02

my_wrapper_script.sh

#!/bin/bash
  
# turn on bash's job control
set -m
  
# Start the primary process and put it in the background
./my_main_process &
  
# Start the helper process
./my_helper_process
  
# the my_helper_process might need to know how to wait on the
# primary process to start before it does its work and returns
  
  
# now we bring the primary process back into the foreground
# and leave it there
fg %1

dockerfile

# syntax=docker/dockerfile:1
FROM ubuntu:latest
COPY my_main_process my_main_process
COPY my_helper_process my_helper_process
COPY my_wrapper_script.sh my_wrapper_script.sh
CMD ./my_wrapper_script.sh

用例03

使用supervisord

# syntax=docker/dockerfile:1
FROM ubuntu:latest
RUN apt-get update && apt-get install -y supervisor
RUN mkdir -p /var/log/supervisor
COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
COPY my_first_process my_first_process
COPY my_second_process my_second_process
CMD ["/usr/bin/supervisord"]

详情见官方链接

https://docs.docker.com/config/containers/multi-service_container/