diff --git a/Dockerfile b/Dockerfile
index 1672c49..ed3cf55 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,8 +20,7 @@ RUN groupadd -g "${WMN_GID}" wmn && \
     chown -R "${WMN_UID}:${WMN_GID}" /opt/webhook-matrix-notifier
 
 USER wmn
-VOLUME /etc/wmn/config.yml
-ENV WMN_CONFIG_PATH=/etc/wmn/config.yml
+ARG WMN_CONFIG_PATH=/etc/wmn/config.yml
 WORKDIR /opt/webhook-matrix-notifier
 
 ENV PIPENV_VENV_IN_PROJECT=1