latest server code

Signed-off-by: Peter Siegmund <developer@mars3142.org>

server/cinema/Dockerfile

@@ -1,5 +1,5 @@
 # Use latest stable channel SDK.
-FROM dart:3.10.1 AS build
+FROM dart:stable AS build
 
 # Resolve app dependencies.
 WORKDIR /app
@@ -17,7 +17,7 @@ RUN APP_VERSION=$(awk '/^version:/{print $2}' pubspec.yaml) && \
 FROM scratch
 COPY --from=build /runtime/ /
 COPY --from=build /app/bin/server /app/bin/
-COPY assets /
+COPY assets /assets
 
 # Start server.
 EXPOSE 3000