Remove port mapping from Docker Compose configuration

Dockerfile

@@ -1,22 +1,43 @@
-# Build stage
-FROM cirrusci/flutter:latest AS builder
+# syntax=docker/dockerfile:1.7
+
+# Stage 1: Build the Flutter web app
+FROM ghcr.io/cirruslabs/flutter:stable AS build
 
 WORKDIR /app
-COPY pubspec.* ./
-COPY lib ./lib
-COPY web ./web
-COPY assets ./assets
+ENV PUB_CACHE=/root/.pub-cache
 
-RUN flutter pub get
-RUN flutter build web --release
+# Copy pubspec files and get dependencies
+COPY pubspec.yaml pubspec.lock ./
+COPY packages/perfetto_trace/pubspec.yaml packages/perfetto_trace/pubspec.yaml
+RUN --mount=type=cache,target=/root/.pub-cache \
+    flutter pub get
 
-# Serve stage
+# Copy the rest of the app
+COPY . .
+
+# Build web app
+RUN --mount=type=cache,target=/root/.pub-cache \
+    flutter build web --release
+
+# Stage 2: Serve with nginx
 FROM nginx:alpine
+ARG PUBLISHED_AT
 
-COPY --from=builder /app/build/web /usr/share/nginx/html
+# Copy the built web app from build stage
+COPY --from=build /app/build/web /usr/share/nginx/html
+# Copy runtime update manifest outside Flutter asset pre-cache.
+COPY --from=build /app/app-version.json /usr/share/nginx/html/app-version.json
 
-COPY nginx.conf /etc/nginx/nginx.conf
+# Fill published_at at image build time (UTC), unless explicitly provided.
+RUN set -eu; \
+    published_at="${PUBLISHED_AT:-$(date -u +%Y-%m-%dT%H:%M:%SZ)}"; \
+    sed "s|__BUILD_PUBLISHED_AT__|${published_at}|g" /usr/share/nginx/html/app-version.json > /tmp/app-version.json; \
+    mv /tmp/app-version.json /usr/share/nginx/html/app-version.json
 
+# Copy custom nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Expose port
 EXPOSE 80
 
-CMD ["nginx", "-g", "daemon off;"]
+CMD ["nginx", "-g", "daemon off;"]