puid and pgid support

rootfs/app/entrypoint.sh

@@ -3,12 +3,17 @@
 WEBROOT=/data/www
 PHP=${PHP:-none}
 USERNAME=${USERNAME:-theuser}
+PUID=${PUID:-1000}
+GROUPNAME=${GROUPNAME:-thegroup}
+PGID=${PGID:-1000}
 RANDOMPWD=$(tr -dc A-Za-z0-9 </dev/urandom | head -c 13)
-adduser -DH -h "${WEBROOT}" -G "nginx" -u "1000" "${USERNAME}"
+addgroup -g "${PGID}" "${GROUPNAME}"
+addgroup nginx "${GROUPNAME}"
+adduser -DH -h "${WEBROOT}" -G "${GROUPNAME}" -u "${PUID}" "${USERNAME}"
 printf '%s\n%s' "${RANDOMPWD}" "${RANDOMPWD}" | passwd "${USERNAME}"
 echo "password for the user \"${USERNAME}\" is: ${RANDOMPWD}"
 
-chown "${USERNAME}:nginx" "${WEBROOT}" -R
+chown "${PUID}:${GROUPNAME}" "${WEBROOT}" -R
 find "${WEBROOT}" -type d -exec chmod 0755 {} \;
 find "${WEBROOT}" -type f -exec chmod 0644 {} \;