Fix conditional block for PostgreSQL environment variables in Mealie container

ansible/roles/deploy_container_mealie/templates/docker-compose.yml.j2

@@ -12,11 +12,13 @@ services:
       ALLOW_SIGNUP: "${MEALIE_ALLOW_SIGNUP}"
       LOG_LEVEL: "${MEALIE_LOGLEVEL}"
       DB_ENGINE: ${MEALIE_DBENGINE} # Optional: 'sqlite', 'postgres'
+      {% if container_mealie_dbengine == "sqlite" %}
       POSTGRES_USER: ${MEALIE_DB_USER}
       POSTGRES_PASSWORD: ${MEALIE_DB_PASSWORD}
       POSTGRES_SERVER: postgres
       POSTGRES_PORT: 5432
       POSTGRES_DB: ${MEALIE_DB_NAME}
+      {% endif %}
       SMTP_HOST=${MEALIE_SMTP_HOST}
       SMTP_PORT=${MEALIE_SMTP_PORT}
       SMTP_FROM_NAME=${MEALIE_SMTP_FROM_MAIL}