ci: enforce ignore-scripts policy for Node package managers

react-express-mysql/frontend/Dockerfile

@@ -8,6 +8,8 @@ ENV PORT=3000
 WORKDIR /code
 COPY package.json /code/package.json
 COPY package-lock.json /code/package-lock.json
+COPY .npmrc .
+COPY .yarnrc.yml .
 RUN npm ci
 COPY . /code