gogs: Fix entrypoint script

images/gogs/docker-entrypoint.sh

 
 # Create admin user if DB was new
 if [ -z "${DB_EXISTS}" ]; then
-    su -c git "${GOGS_PATH}/gogs admin create-user --name admin --password ${GOGS_ADMIN_PWD} --admin --email ${ADMIN_EMAIL}"
+    su git -c "${GOGS_PATH}/gogs admin create-user --name admin --password ${GOGS_ADMIN_PWD} --admin --email ${ADMIN_EMAIL}"
 fi
 
+# Rewrite authorized keys. See issue:
+# https://github.com/gogs/gogs/issues/1688#issuecomment-143265108
+# https://github.com/gogs/gogs/issues/4435
+su git -c "${GOGS_PATH}/gogs admin rewrite-authorized-keys"
+
 #exec "$@"
 #exec gosu git ${GOGS_PATH}/gogs web
 exec su git -c "${GOGS_PATH}/gogs web"