fix(picture): fix health endpoint and port consistency for Docker deployment

Exclude /health from global prefix so healthchecks hit /health instead of
/api/v1/health. Update Dockerfile EXPOSE and healthcheck to use port 3040
matching docker-compose config.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/picture/apps/backend/Dockerfile

@@ -84,12 +84,12 @@ RUN chmod +x /usr/local/bin/docker-entrypoint.sh
 
 WORKDIR /app/apps/picture/apps/backend
 
-# Expose port
-EXPOSE 3006
+# Expose port (overridden by PORT env var in docker-compose)
+EXPOSE 3040
 
-# Health check
+# Health check (overridden by docker-compose healthcheck)
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-  CMD wget --no-verbose --tries=1 --spider http://localhost:3006/api/health || exit 1
+  CMD wget --no-verbose --tries=1 --spider http://localhost:${PORT:-3040}/health || exit 1
 
 # Run entrypoint script
 ENTRYPOINT ["docker-entrypoint.sh"]

apps/picture/apps/backend/src/main.ts

@@ -47,8 +47,10 @@ async function bootstrap() {
 		prefix: '/uploads/',
 	});
 
-	// Set global prefix for API routes
-	app.setGlobalPrefix('api/v1');
+	// Set global prefix for API routes, exclude health/metrics
+	app.setGlobalPrefix('api/v1', {
+		exclude: ['health', 'metrics'],
+	});
 
 	const port = process.env.PORT || 3006;
 	await app.listen(port);