Fix: [AEA-0000] - add version number to docker image (#10)

## Summary

- Routine Change

### Details

- add version number to dockerfile

Author: anthony-nhs

.github/workflows/docker_image_build.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Build cdk-utils-build Docker image
         id: build-cdk-utils-build-image
         run: |
-          docker build -t "cdk-utils-build:${{ inputs.VERSION_NUMBER }}" -f docker/Dockerfile .
+          docker build -t "cdk-utils-build:${{ inputs.VERSION_NUMBER }}" -f docker/Dockerfile --build-arg VERSION=${{ inputs.VERSION_NUMBER }} .
           docker save "cdk-utils-build:${{ inputs.VERSION_NUMBER }}" -o cdk-utils-build.img   
 
       - uses: actions/upload-artifact@v4

docker/Dockerfile

@@ -1,4 +1,7 @@
 FROM ubuntu:24.04
+
+ARG VERSION
+
 RUN apt-get update \
     && export DEBIAN_FRONTEND=noninteractive \
     && apt-get -y upgrade
@@ -33,4 +36,6 @@ RUN asdf plugin add nodejs https://github.com/asdf-vm/asdf-nodejs.git
 # copy files needed for deployment
 COPY --chown=cdkuser docker/entrypoint.sh /home/cdkuser/
 
+RUN echo "${VERSION}" > version.txt
+
 ENTRYPOINT ["/home/cdkuser/entrypoint.sh"]

docker/entrypoint.sh

@@ -1,6 +1,14 @@
 #!/usr/bin/env bash
 set -e
 
+VERSION=$(cat version.txt)
+
+echo "**************************************"
+echo "RUNNING CDK_UTILS VERSION ${VERSION}"
+echo "**************************************"
+echo
+echo
+
 if [ -z "${CDK_APP_PATH}" ]; then
     echo "CDK_APP_PATH is unset or set to the empty string"
     exit 1