Update Dockerfile

Author: LordRalex

Dockerfile

@@ -15,17 +15,17 @@ RUN git clone https://github.com/Dragory/modmailbot && \
 
 
 FROM node:14-alpine
-ENV MM_MAIN_SERVER_ID=
-ENV MM_INBOX_SERVER_ID=
-ENV MM_LOG_CHANNEL_ID=
-ENV MM_ALLOW_USER_CLOSE=1
-ENV MM_TOKEN=
-ENV MM_LOG_STORAGE=local
-ENV MM_DB_TYPE=sqlite
-ENV MM_CLOSE_MESSAGE="This thread has been closed."
-ENV MM_CATEGORY_AUTOMATION__NEW_THREAD=
-ENV MM_STATUS="Modmail, the way to report things"
-ENV MM_URL=
+ENV MM_MAIN_SERVER_ID= \
+    MM_INBOX_SERVER_ID= \
+    MM_LOG_CHANNEL_ID= \
+    MM_ALLOW_USER_CLOSE=1 \
+    MM_TOKEN= \
+    MM_LOG_STORAGE=local \
+    MM_DB_TYPE=sqlite \
+    MM_CLOSE_MESSAGE="This thread has been closed." \
+    MM_CATEGORY_AUTOMATION__NEW_THREAD= \
+    MM_STATUS="Modmail, the way to report things" \
+    MM_URL=
 
 COPY --from=BUILD_IMAGE /usr/src/app/modmailbot /usr/src/modmailbot