fix: fix testing torrents container

packages/testing-torrents/Dockerfile

@@ -1,14 +1,17 @@
 FROM node:23-slim AS nodebt
+RUN npm install -g pnpm
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
 
 FROM nodebt AS deps
 
 RUN mkdir -p /app/workspace
 WORKDIR /app
 COPY package.json /app/
-RUN npm install
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --no-frozen-lockfile
 
 FROM deps AS app
 
 COPY main.ts /app/
 
-CMD [ "npm", "start" ]
+CMD [ "npm", "start" ]