Add possibility to turn on debugging on fava

Dockerfile

@@ -63,6 +63,7 @@ COPY --from=build_env /app /app
 EXPOSE 5000
 
 ENV BEANCOUNT_FILE=""
+ENV FAVA_DEBUG="false"
 
 ENV FAVA_HOST="0.0.0.0"
 ENV PATH="/app/bin:$PATH"

README.md

@@ -16,6 +16,7 @@ docker run -d \
     --name=syncthing \
     -v $PWD:/bean \
     -e BEANCOUNT_FILE=/bean/example.bean \
+    -e FAVA_DEBUG=false \
     -p 5000:5000 \
     --restart unless-stopped \
     yegle/fava
@@ -34,16 +35,18 @@ services:
       - 5000:5000
     environment:
       - BEANCOUNT_FILE=/bean/example.beancount
+      - FAVA_DEBUG=false
     volumes:
       - ${PWD}/:/bean
     restart: unless-stopped
 ```
 
 ## Environment Variable
 
-| Parameter | Value |
-| :----: | --- |
-| `BEANCOUNT_FILE` | path to your beancount file. Default to empty string. |
+|    Parameter     | Value                                                  |
+| :--------------: | ------------------------------------------------------ |
+| `BEANCOUNT_FILE` | path to your beancount file. Default to empty string.  |
+|   `FAVA_DEBUG`   | Whether to turn on debugging or not. Default to false. |
 
 ## Note on auto build