Added Dockerfile

.gitignore

@@ -4,5 +4,3 @@ dist/
 coverage/
 .DS_Store
 *.log
-.env*
-!.env.example

Dockerfile

@@ -0,0 +1,36 @@
+### `Dockerfile`
+```dockerfile
+# Multi-Stage Dockerfile for Gothic II Mod Website
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Install dependencies first for better Docker layer caching
+COPY package*.json ./
+RUN npm ci
+
+# Copy source code and build the production bundle
+COPY . .
+RUN npm run build
+
+# Production Runner Stage
+FROM node:20-alpine AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV PORT=3000
+
+# Install production dependencies only
+COPY package*.json ./
+RUN npm ci --only=production
+
+# Copy built dist files and default cms data from builder
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/src/data ./src/data
+COPY --from=builder /app/cms-data.json ./cms-data.json
+
+EXPOSE 3000
+
+CMD ["node", "dist/server.cjs"]
+```