fix

Dockerfile

@@ -11,6 +11,10 @@ RUN \
   apt update && \
   apt install -y cron && \
   apt install -y exim4 && \
+  apt install -y python3 && \
+  apt install -y python3-pip && \
+  pip3 install requests && \
+  pip3 install Cheetah3 && \
   sed -i \
     -e "s/dc_eximconfig_configtype='local'/dc_eximconfig_configtype='satellite'/" \
     -e "s/dc_smarthost=''/dc_smarthost='${SMARTHOST}'/" \
@@ -24,6 +28,8 @@ RUN \
 USER 1000:1000
 WORKDIR ${APP_DIR}
 VOLUME /etc/cron.d
+VOLUME ${APP_DIR}
+