added ci

Dockerfile

@@ -0,0 +1,102 @@
+# Multi-stage build for combined frontend + backend
+FROM node:20-alpine AS backend-builder
+
+WORKDIR /app/backend
+
+# Install Python and required build tools for OR-Tools
+RUN apk add --no-cache \
+    python3 \
+    py3-pip \
+    build-base \
+    python3-dev \
+    cmake \
+    make \
+    g++ \
+    linux-headers
+
+# Create symlink so python3 is callable as python
+RUN ln -sf /usr/bin/python3 /usr/bin/python
+
+# Upgrade pip and install Python dependencies
+RUN python -m pip install --upgrade pip && \
+    pip install ortools
+
+# Copy backend files
+COPY backend/package*.json ./
+COPY backend/tsconfig.json ./
+
+# Install backend dependencies
+RUN npm ci
+
+# Copy backend source
+COPY backend/src/ ./src/
+COPY backend/python-scripts/ ./python-scripts/
+
+# Build backend
+RUN npm run build
+
+# Verify Python and OR-Tools installation
+RUN python -c "from ortools.sat.python import cp_model; print('OR-Tools installed successfully')"
+
+# Frontend build stage
+FROM node:20-alpine AS frontend-builder
+
+WORKDIR /app/frontend
+
+# Copy frontend files
+COPY frontend/package*.json ./
+COPY frontend/tsconfig.json ./
+
+# Install frontend dependencies
+RUN npm ci
+
+# Copy frontend source
+COPY frontend/src/ ./src/
+COPY frontend/public/ ./public/
+
+# Build frontend
+RUN npm run build
+
+# Production stage
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Install Python and OR-Tools for production
+RUN apk add --no-cache \
+    python \
+    py3-pip \
+    && pip3 install ortools
+
+# Install PM2 for process management
+RUN npm install -g pm2
+
+# Copy backend built files
+COPY --from=backend-builder /app/backend/package*.json ./
+COPY --from=backend-builder /app/backend/dist/ ./dist/
+COPY --from=backend-builder /app/backend/node_modules/ ./node_modules/
+COPY --from=backend-builder /app/backend/python-scripts/ ./python-scripts/
+
+# Copy frontend built files  
+COPY --from=frontend-builder /app/frontend/build/ ./frontend-build/
+
+# Copy PM2 configuration
+COPY ecosystem.config.js ./
+
+# Create a non-root user
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -S schichtplan -u 1001 && \
+    chown -R schichtplan:nodejs /app
+
+USER schichtplan
+
+# Verify installations
+RUN python --version && \
+    python -c "from ortools.sat.python import cp_model; print('OR-Tools verified')"
+
+EXPOSE 3000 3002
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3002/api/health || exit 1
+
+CMD ["pm2-runtime", "ecosystem.config.js"]