Fixing Docker build images to add new messages directory

back/Dockerfile

@@ -1,7 +1,9 @@
 FROM thecodingmachine/nodejs:12
 
-COPY --chown=docker:docker . .
+COPY --chown=docker:docker back .
+COPY --chown=docker:docker messages ../messages
 RUN yarn install
+RUN cd /usr/src/messages && yarn install
 
 ENV NODE_ENV=production
 

back/src/Model/Websocket/ExSocketInterface.ts

@@ -8,7 +8,7 @@ import {BatchMessage, SubMessage} from "../../../../messages/generated/messages_
 export interface ExSocketInterface extends Socket, Identificable {
     token: string;
     roomId: string;
-    webRtcRoomId: string;
+    webRtcRoomId: string|undefined;
     userId: number;   // A temporary (autoincremented) identifier for this user
     userUuid: string; // A unique identifier for this user
     name: string;