Update copy version.txt step

Author: kris-szlapa

.github/workflows/cdk_release_code.yml

@@ -100,8 +100,11 @@ jobs:
           docker tag "${{ env.ACCOUNT_ID }}.dkr.ecr.eu-west-2.amazonaws.com/cdk-utils-build-repo:latest" cdk-utils-build-repo:latest
 
       - name: Copy version.txt from Docker image into .build
-        run: docker run --rm --entrypoint cat cdk-utils-build-repo:latest /version.txt > .build/version.txt
-        
+        run: |
+          docker run --rm --entrypoint bash cdk-utils-build-repo:latest \
+            -c 'find / -name version.txt 2>/dev/null | head -n1 | xargs cat' \
+            > .build/version.txt
+
       - name: Configure AWS Credentials
         id: connect-aws
         uses: aws-actions/configure-aws-credentials@v4
@@ -125,9 +128,6 @@ jobs:
           SLACK_BOT_TOKEN: "${{ secrets.SLACK_BOT_TOKEN }}"
           SLACK_SIGNING_SECRET: "${{ secrets.SLACK_SIGNING_SECRET }}"
 
-      - name: Create version.txt for CDK utils container
-        run: echo "cdk-utils-latest" > .build/version.txt
-
       - name: Show diff
         run: |
           docker run \