supervisor: replace bash with sh

supervisord.conf

@@ -4,21 +4,21 @@ logfile=/dev/null
 logfile_maxbytes=0
 
 [program:sogo]
-command=/bin/bash -c "/usr/sbin/sogod %(ENV_DAEMON_OPTS)s"
+command=/bin/sh -c "/usr/sbin/sogod %(ENV_DAEMON_OPTS)s"
 user=sogo
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
 redirect_stderr=true
 
 [program:nginx]
-command=nginx -g 'daemon off;'
+command=/bin/sh -c "/usr/sbin/nginx -g 'daemon off;'"
 user=root
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
 redirect_stderr=true
 
 [program:crond]
-command=crond -f -L 15
+command=/bin/sh -c "/usr/sbin/crond -f -L 15"
 autostart=true
 autorestart=true
 user=root