Dockerfile supervisord.conf

要在同一容器中執行多個程序（例如 Apache Web 伺服器和 SSH 守護程式），你可以使用 supervisord。

建立你的 supervisord.conf 配置檔案，如：

[supervisord]
nodaemon=true

[program:sshd]
command=/usr/sbin/sshd -D

[program:apache2]
command=/bin/bash -c "source /etc/apache2/envvars && exec /usr/sbin/apache2 -DFOREGROUND"

然後建立一個 Dockerfile，如：

FROM ubuntu:16.04
RUN apt-get install -y openssh-server apache2 supervisor
RUN mkdir -p /var/lock/apache2 /var/run/apache2 /var/run/sshd /var/log/supervisor
COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
CMD ["/usr/bin/supervisord"]

然後你可以建立你的形象：

docker build -t supervisord-test .

之後你可以執行它：

$ docker run -p 22 -p 80 -t -i supervisord-test
2016-07-26 13:15:21,101 CRIT Supervisor running as root (no user in config file)
2016-07-26 13:15:21,101 WARN Included extra file     "/etc/supervisor/conf.d/supervisord.conf" during parsing
2016-07-26 13:15:21,112 INFO supervisord started with pid 1
2016-07-26 13:15:21,113 INFO spawned: 'sshd' with pid 6
2016-07-26 13:15:21,115 INFO spawned: 'apache2' with pid 7
...