fix: template secret, skip _FILE dance

entrypoint.sh.tmpl

@@ -1,29 +1,3 @@
 #!/bin/bash
 
-set -e
-
-file_env() {
-   local var="$1"
-   local fileVar="${var}_FILE"
-   local def="${2:-}"
-
-   if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
-      echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
-      exit 1
-   fi
-
-   local val="$def"
-
-   if [ "${!var:-}" ]; then
-      val="${!var}"
-   elif [ "${!fileVar:-}" ]; then
-      val="$(< "${!fileVar}")"
-   fi
-
-   export "$var"="$val"
-   unset "$fileVar"
-}
-
-file_env "POSTGRES_DB_PASSWORD"
-
 /start.py