diff --git a/client/Dockerfile.web b/client/Dockerfile.web
index ef17c22..dd9b8ce 100644
--- a/client/Dockerfile.web
+++ b/client/Dockerfile.web
@@ -6,8 +6,9 @@ RUN corepack enable
 RUN yarn set version stable
 
 COPY package.json yarn.lock .yarnrc.yml ./
+COPY .yarn ./.yarn
 
-RUN yarn install
+RUN yarn install --immutable
 COPY . .
 
 ARG COMMIT_SHA=unknown