Revert "Yarn cache issue due to root file system security"

This reverts commit 5dfc970.

Author: eisbilir

docker/Dockerfile

@@ -8,6 +8,6 @@ COPY . /challenge-api
 WORKDIR /challenge-api
 
 # Install the dependencies from package.json
-RUN HOME=$(pwd) yarn install
+RUN yarn install
 
-CMD yarn start
+CMD yarn start