Docker to yarn

Dockerfile

@@ -1,17 +1,19 @@
 FROM docker.io/library/node:18.20.0 as build
 RUN mkdir /peer-server
 WORKDIR /peer-server
-COPY package.json package-lock.json ./
-RUN npm clean-install
-COPY . ./
-RUN npm run build
-RUN npm run test
+COPY package.json yarn.lock .yarnrc.yml ./
+RUN corepack install && corepack enable
+RUN yarn install --immutable
+COPY . .
+RUN yarn run build
+RUN yarn run test
 
 FROM docker.io/library/node:18.20.0-alpine as production
 RUN mkdir /peer-server
 WORKDIR /peer-server
-COPY package.json package-lock.json ./
-RUN npm clean-install --omit=dev
+COPY package.json yarn.lock .yarnrc.yml ./
+RUN corepack install && corepack enable
+RUN yarn workspaces focus --all --production
 COPY --from=build /peer-server/dist/bin/peerjs.js ./
 ENV PORT 9000
 EXPOSE ${PORT}