supervisord.conf

[supervisord]
user=root
nodaemon=true
logfile=/var/log/supervisord.log
pidfile=/var/run/supervisord.pid
childlogdir=/var/log
logfile_maxbytes=50MB                           ; maximum size of logfile before rotation
logfile_backups=10                              ; number of backed up logfiles
loglevel=error

[program:cron]
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
command=/usr/bin/busybox crond -f -l 0 -L /dev/stdout

[program:postgres]
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
command=runuser --user postgres -- /usr/lib/postgresql/%(ENV_PG_MAJOR)s/bin/postgres