When running the docker auto-updater image as non-root user,
supervisord logs a "CRIT could not write pidfile /run/supervisord.pid"
since the user does not have permission to the /run directory.
Changing the location to /etc/supervisor fixes it because permissions
are set for non-root access of the /etc/supervisor directory.
Closes https://github.com/storj/storj/issues/4730
Change-Id: Id463f3a08db44dd9283921ece4575abdad9bd7f2
The supervisord.conf file is edited to set the args for the storagenode and storagenode-updater binaries at runtime. This change moves the config file to the base image so we can set the permission to allow non-root users edit the config file.
Non-root user permission is also needed for the /app directory so we can install/update the binaries when run as a non-root user.
Updates https://github.com/storj/storj/issues/4489
Change-Id: If7a51a00ea171253e41923501174a43393f4638c
