Use /bin/sh for entrypoint (no bash)

compose.yml

@@ -26,7 +26,6 @@ services:
     networks:
       - proxy
       - internal
-    command: server start
     entrypoint: /entrypoint.sh
     volumes:
       - app:/gotosocial/storage

entrypoint.sh

@@ -1,25 +1,7 @@
-#!/bin/bash
+#!/bin/sh
 
 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"
-}
+export GTS_DB_PASSWORD=$(cat "$GTS_DB_PASSWORD_FILE")
 
-file_env "GTS_DB_PASSWORD"
-
-exec "$@"
+/gotosocial/gotosocial server start