improve supabase

supabase/README.md

@@ -1,3 +1,5 @@
 # Supabase
 
-Copied and adapted from https://github.com/supabase/supabase/tree/master/docker
+- copied from https://github.com/supabase/supabase/tree/master/docker
+- removed `container_name`
+- removed `ports`

supabase/update.sh

@@ -1,4 +1,13 @@
 #!/bin/bash
 
+# check if ./repo exists
+if [ ! -d "./repo" ]; then
+    git clone --depth 1 --branch master --single-branch https://github.com/supabase/supabase repo
+else
+    cd repo
+    git pull
+    cd ..
+fi
+
 # copy files from ./repo/docker to ./code
 cp -r ./repo/docker/* ./code