docker fix

dockerfile

@@ -7,10 +7,12 @@ COPY ./style.css .
 COPY ./backend.js .
 COPY ./package.json .
 COPY ./package-lock.json .
-COPY ./session .
-COPY ./game .
+COPY ./session ./session
+COPY ./game ./game
 
 RUN npm i
+RUN touch ./imposter.db || true
+
 EXPOSE 3000
 CMD ["node", "backend.js"]