npm to pnpm

Dockerfile

@@ -1,18 +1,45 @@
+# MetaMesh Plugin: subtitle-extractor
+# Extracts embedded subtitles from video files
+
 FROM node:20-slim AS builder
-WORKDIR /app
-COPY package.json tsconfig.json ./
-RUN npm install
-COPY src/ ./src/
-RUN npm run build
+
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN npm install -g corepack@latest && corepack enable
 
-FROM node:20-slim
-# Install ffmpeg for subtitle extraction
-RUN apt-get update && apt-get install -y ffmpeg && rm -rf /var/lib/apt/lists/*
 WORKDIR /app
-COPY package.json ./
-RUN npm install --omit=dev
+
+# Copy package files first for layer caching
+COPY package.json pnpm-lock.yaml ./
+RUN corepack install
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+
+# Copy source and build
+COPY tsconfig.json ./
+COPY src/ ./src/
+RUN pnpm run build
+
+# Production image with ffmpeg
+FROM node:20-slim
+
+# Install ffmpeg for subtitle extraction
+RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg && rm -rf /var/lib/apt/lists/*
+
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN npm install -g corepack@latest && corepack enable
+
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml ./
+RUN corepack install
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile --prod
+
 COPY --from=builder /app/dist ./dist
+
 EXPOSE 8080
+
 HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
   CMD node -e "require('http').get('http://localhost:8080/health', (r) => process.exit(r.statusCode === 200 ? 0 : 1))"
+
 CMD ["node", "dist/index.js"]