diff --git a/abra.sh b/abra.sh
index e6c130b..db2dfdb 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1 +1 @@
-export ENTRYPOINT_VERSION=v1
+export ENTRYPOINT_VERSION=v4
diff --git a/compose.yml b/compose.yml
index 28606d9..9a05f11 100644
--- a/compose.yml
+++ b/compose.yml
@@ -16,7 +16,7 @@ services:
       - SYMFONY__ENV__DATABASE_CHARSET=utf8mb4
       - SYMFONY__ENV__MAILER_HOST
       - SYMFONY__ENV__MAILER_USER
-      - SYMFONY__ENV__MAILER_PASSWORD=/run/secrets/smtp_password
+      - SYMFONY__ENV__MAILER_PASSWORD_FILE=/run/secrets/smtp_password
       - SYMFONY__ENV__FROM_EMAIL
       - SYMFONY__ENV__DOMAIN_NAME=https://${DOMAIN}
       - SYMFONY__ENV__FOSUSER_REGISTRATION
@@ -28,7 +28,6 @@ services:
       - internal
     secrets:
       - db_password
-      #- admin_password
       - app_secret
       - smtp_password
     entrypoint: /custom-entrypoint.sh
diff --git a/entrypoint.sh.tmpl b/entrypoint.sh.tmpl
index 97bdd3e..094b321 100644
--- a/entrypoint.sh.tmpl
+++ b/entrypoint.sh.tmpl
@@ -1,31 +1,9 @@
-#!/bin/bash
+#!/bin/sh
 
-set -eu
+export SYMFONY__ENV__DATABASE_PASSWORD=$(cat $SYMFONY__ENV__DATABASE_PASSWORD_FILE)
+export SYMFONY__ENV__SECRET=$(cat $SYMFONY__ENV__SECRET_FILE)
 
-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 "SYMFONY__ENV__DATABASE_PASSWORD"
-file_env "SYMFONY__ENV__SECRET"
+export SYMFONY__ENV__MAILER_DSN=smtp://${SYMFONY__ENV__MAILER_USER}:$(cat ${SYMFONY__ENV__MAILER_PASSWORD_FILE})@${SYMFONY__ENV__MAILER_HOST}:465
 
 # https://github.com/wallabag/docker/blob/master/root/entrypoint.sh
 sh -c "/entrypoint.sh migrate"