New services, cleanup, readme

hass/wait-for-db.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# wait-for-db.sh
+
+set -e
+
+host=${WAITDB_HOST}
+user=${WAITDB_USER}
+pass=${WAITDB_PASS}
+
+echo "$host $user $pass"
+
+if [[ -v host ]]; then
+  until mysql --host="$host" --user="$user" --password="$pass" -e '\q'; do
+    >&2 echo "Database unavailable - sleeping"
+    sleep 1
+  done
+  >&2 echo "Database available!"
+fi
+
+>&2 echo "Executing command"
+exec "$@"