Handle default umask 077 on app/scripts/init-db directory in startup and docs

[arrrgi]

Describe your issue

My environment consists of a local development workstation and a Docker host that has had some hardening applied.

By default, new files and directories are created following the UMASK 077 directive in the /etc/login.defs file.

Without updating permissions on the app/scripts/init-db directory, docker compose fails to start the container stack. The resulting error is thrown by the plandex-postgres container:

plandex-postgres-1  | ls: cannot open directory '/docker-entrypoint-initdb.d/': Permission denied

Expected result

The start_local.sh script should check and prompt/force update permissions to the init-db directory, otherwise, reflect this necessary requirement appropriately in documentation for others who run into the same permissions issue.

Workarounds

A simple chmod -R 0755 init-db was sufficient enough to allow docker compose to bring up the Postgres container.