A Docker image for running applications with the
Supervisor process monitor.
- Uses the
- Installs Supervisor from the Debian repositories
- Configures Supervisor to log to
/dev/stdoutso that Docker can process the
- Imports any configurations you add to
/etc/supervisor/conf.d/- just extend
the image and copy
- Exposes port 9001 on the container so that you can monitor the application
supervisorctl -s http://<container_ip>:<mapped_port>on the host.
Here's how to extend it with a simple example—a Go webserver container:
# some-app # # VERSION 0.1.0 FROM elithrar/supervisor MAINTAINER Matt Silverlock firstname.lastname@example.org # create a deploy user for our app to run as RUN adduser --disabled-password --gecos "" deploy RUN mkdir -p /home/deploy/some-app # copy our supervisor config COPY some-app.supervisord /etc/supervisor/conf.d/some-app.conf # copy the Go binary COPY some-app /home/deploy/ CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/supervisord.conf"] EXPOSE 8000
/etc/supervisor/conf.d/some-app.conf file looks like this:
[program:some-app] user=deploy directory=/home/deploy/ command=/home/deploy/some-app autostart=true autorestart=true redirect_stderr=true stdout_logfile=/dev/stdout stdout_logfile_maxbytes=0
Note the log re-direction to stdout (instead of inside the container) and the
stdout_logfile_maxbytes=0 to prevent log-rotation, which won't work
when using stdout.
BSD 3-Clause. See the LICENSE file for details.