Update Dockerfile.windows

client/Dockerfile.windows

@@ -6,6 +6,9 @@ WORKDIR /app
 # RUN corepack enable yarn && yarn set version stable
 
 COPY package.json yarn.lock .yarnrc.yml .yarn ./
+RUN ls -la
+RUN ls -la app
+RUN ls -la .yarn
 
 RUN yarn install --immutable
 COPY . .