Repaired some bugs from refactor

minecraft-server/start

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+set -e
+sed -i "/^minecraft/s/:1000:1000:/:${UID}:${GID}:/g" /etc/passwd
+sed -i "/^minecraft/s/:1000:/:${GID}:/g" /etc/group
+
+if [ "$SKIP_OWNERSHIP_FIX" != "TRUE" ]; then
+  fix_ownership() {
+    dir=$1
+    if ! su-exec minecraft test -w $dir; then
+      echo "Correcting writability of $dir ..."
+      chown -R minecraft:minecraft $dir
+      chmod -R u+w $dir
+    fi
+  }
+
+  fix_ownership /data
+  fix_ownership /home/minecraft
+fi
+
+echo "Switching to user 'minecraft'"
+su-exec minecraft /start-configuration $@