Add verbose step-by-step debug output to Dockerfile

Each build step now prints output to help identify where the build fails.

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -3,37 +3,51 @@ FROM node:20-slim
 # Set noninteractive installation
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Build timestamp to force cache invalidation: 2026-01-12T22:35
+# Build timestamp: 2026-01-12T22:45
 
 # Install build dependencies
-RUN apt-get update && apt-get install -y \
-    curl \
-    git \
-    && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y curl git && rm -rf /var/lib/apt/lists/*
 
-# Create app directory
 WORKDIR /app
 
-# Copy package files first for better caching
-COPY trigo-web/package*.json ./
-COPY trigo-web/app/package*.json ./app/
-COPY trigo-web/backend/package*.json ./backend/
+# Create directories
+RUN mkdir -p app backend
 
-# Install build tools globally
+# Copy root package.json
+COPY trigo-web/package.json ./package.json
+COPY trigo-web/package-lock.json ./package-lock.json
+
+# Check what we have so far
+RUN echo "=== Step 1: Root package.json ===" && ls -la && cat package.json
+
+# Copy app package.json
+COPY trigo-web/app/package.json ./app/package.json
+COPY trigo-web/app/package-lock.json ./app/package-lock.json
+
+# Check app
+RUN echo "=== Step 2: App package.json ===" && ls -la app/ && cat app/package.json
+
+# Copy backend package.json
+COPY trigo-web/backend/package.json ./backend/package.json
+COPY trigo-web/backend/package-lock.json ./backend/package-lock.json
+
+# Check backend
+RUN echo "=== Step 3: Backend package.json ===" && ls -la backend/ && cat backend/package.json
+
+# Install build tools
 RUN npm install -g tsx jison typescript esbuild
 
-# Install dependencies - show verbose output
-RUN echo "=== Installing root dependencies ===" && \
-    npm install --omit=dev && \
-    echo "=== Installing app dependencies ===" && \
-    cd app && npm install && \
-    echo "=== Installing backend dependencies ===" && \
-    cd ../backend && npm install && \
-    echo "=== Done installing dependencies ==="
+# Install root deps
+RUN echo "=== Step 4: Installing root deps ===" && npm install --omit=dev
+
+# Install app deps
+RUN echo "=== Step 5: Installing app deps ===" && cd app && npm install
+
+# Install backend deps
+RUN echo "=== Step 6: Installing backend deps ===" && cd backend && npm install
 
 # Copy source files
 COPY trigo-web/inc/ ./inc/
-COPY trigo-web/public/ ./public/
 COPY trigo-web/app/src/ ./app/src/
 COPY trigo-web/app/index.html ./app/
 COPY trigo-web/app/vite.config.ts ./app/
@@ -41,34 +55,42 @@ COPY trigo-web/app/tsconfig*.json ./app/
 COPY trigo-web/backend/src/ ./backend/src/
 COPY trigo-web/backend/tsconfig.json ./backend/
 
-# Copy .env files
+# Check source files
+RUN echo "=== Step 7: Source files ===" && ls -la app/src/ && ls -la backend/src/
+
+# Copy public folder (may have LFS issues)
+COPY trigo-web/public/ ./public/
+RUN echo "=== Step 8: Public folder ===" && ls -la public/ && du -sh public/
+
+# Copy env files
 COPY trigo-web/.env* ./
 COPY trigo-web/app/.env* ./app/
 COPY trigo-web/backend/.env* ./backend/
 
-# Build frontend - show all output
-RUN echo "=== Starting Vite build ===" && \
+# Build frontend
+RUN echo "=== Step 9: Building frontend ===" && \
     cd app && \
-    NODE_OPTIONS="--max-old-space-size=4096" npm run build:prod && \
-    echo "=== Vite build completed ===" && \
-    ls -la dist/
+    NODE_OPTIONS="--max-old-space-size=4096" npm run build:prod 2>&1 || \
+    (echo "VITE BUILD FAILED" && exit 1)
+
+RUN echo "=== Step 10: Frontend dist ===" && ls -la app/dist/
 
 # Build backend
-RUN echo "=== Building backend ===" && \
+RUN echo "=== Step 11: Building backend ===" && \
     mkdir -p backend/dist/backend/src && \
-    esbuild backend/src/server.ts --bundle --platform=node --target=node20 --format=esm --outfile=backend/dist/backend/src/server.js --external:express --external:socket.io --external:cors --external:dotenv --external:uuid && \
-    echo "=== Backend build completed ==="
+    esbuild backend/src/server.ts --bundle --platform=node --target=node20 --format=esm \
+    --outfile=backend/dist/backend/src/server.js \
+    --external:express --external:socket.io --external:cors --external:dotenv --external:uuid
+
+RUN echo "=== Step 12: Backend dist ===" && ls -la backend/dist/backend/src/
 
-# Copy the pre-built parser
+# Copy parser
 COPY trigo-web/public/lib/tgnParser.cjs ./public/lib/
 
-# Set environment variables for Hugging Face Spaces
 ENV PORT=7860
 ENV HOST=0.0.0.0
 ENV NODE_ENV=production
 
-# Expose port 7860 (required by Hugging Face Spaces)
 EXPOSE 7860
 
-# Start backend server (which will also serve frontend static files)
 CMD ["npm", "run", "start:prod"]