Reduce size of container image

Author: aledbf

.github/workflows/release.yml

@@ -29,13 +29,13 @@ jobs:
 
       - name: Export tgz
         run: |
-          docker save ghcr.io/${{ github.repository }}:latest > gitpod-eks-guide.tar
+          docker save ghcr.io/${{ github.repository }}:latest | gzip > gitpod-eks-guide.tgz
 
       - name: Release
         uses: ncipollo/release-action@v1
         if: startsWith(github.ref, 'refs/tags/')
         with:
-          artifacts: gitpod-eks-guide.tar
+          artifacts: gitpod-eks-guide.tgz
           allowUpdates: true
           artifactErrorsFailBuild: true
           token: ${{ secrets.GITHUB_TOKEN }}

Dockerfile

@@ -31,9 +31,11 @@ WORKDIR /gitpod
 COPY package.json /gitpod/
 COPY yarn.lock /gitpod/
 
-RUN yarn --pure-lockfile --non-interactive
+RUN yarn --pure-lockfile --non-interactive \
+  && rm -rf /usr/local/share/.cache/yarn
 
-RUN yarn global add aws-cdk npx
+RUN yarn global add aws-cdk npx \
+  && rm -rf /usr/local/share/.cache/yarn
 
 COPY . /gitpod