Tidy up the Docker image's entrypoint

.dockerfiles/entrypoint.sh

@@ -6,13 +6,8 @@
 printf "Configuring salty-chat ..."
 [ -z "${DATA}" ] && DATA="/data"
 [ -z "${STORE}" ] && STORE="bitcask:///data/saltyim.db"
-#[ -z "${OPEN_REGISTRATIONS}" ] && OPEN_REGISTRATIONS=true
-#[ -z "${OPEN_PROFILES}" ] && OPEN_PROFILES=true
-#[ -z "${COOKIE_SECRET}" ] && COOKIE_SECRET="$(random_string)"
-#[ -z "${MAGICLINK_SECRET}" ] && MAGICLINK_SECRET="$(random_string)"
-#[ -z "${API_SIGNING_KEY}" ] && API_SIGNING_KEY="$(random_string)"
 
-export DATA STORE OPEN_REGISTRATIONS OPEN_PROFILES COOKIE_SECRET MAGICLINK_SECRET API_SIGNING_KEY
+export DATA STORE
 
 printf "Switching UID=%s and GID=%s\n" "${PUID}" "${PGID}"
 exec su-exec salty:ysalty "$@"