add auto-migration on backend startup

abra.sh

@@ -4,6 +4,7 @@ export ABRA_ENTRYPOINT_VERSION=v5
 export NGINX_CONF_VERSION=v3
 export PG_BACKUP_VERSION=v3
 export MINIO_INITIALIZE_VERSION=v1
+export MIGRATE_VERSION=v1
 
 environment() {
   # this exports all the secrets as environment variables
@@ -11,8 +12,7 @@ environment() {
 }
 
 migrate() {
-  environment
-  python manage.py migrate --noinput
+  /migrate.sh
 }
 
 minio_initialize() {