fix: set postgres password from secret for app container

compose.yml

@@ -12,8 +12,10 @@ services:
     secrets:
       - secret_key
       - smtp_pwd
+      - db_password
     environment:
-      - DATABASE_URL=postgres://postgres:postgres@rallly_db:5432/db
+      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
+      - DATABASE=rallly_db:5432/db
       - NEXT_PUBLIC_BASE_URL=${DOMAIN}
       - SECRET_PASSWORD_FILE=/run/secrets/secret_key
       - SUPPORT_EMAIL

entrypoint.sh.tmpl

@@ -25,5 +25,8 @@ file_env() {
 
 file_env "SECRET_PASSWORD"
 file_env "SMTP_PWD"
+file_env "POSTGRES_PASSWORD"
+
+export DATABASE_URL=postgres://postgres:$POSTGRES_PASSWORD@$DATABASE
 
 /app/docker-start.sh