Adjust helm push call to renamed command

"helm push" is not available anymore, it was renamed to "helm cm-push".
See chartmuseum/helm-push#110

README.md

@@ -1,5 +1,7 @@
 # Docker Image for the Helm Release Github Action
 
-This is a the actual implementation of the [Flownative Github Action for releasing Helm charts](https://github.com/flownative/action-helm-release).
-The actual Github action refers to a pre-built image in its `Dockerfile`, so that the action image does not have to be
-re-built on every use.
+This is a the actual implementation of the
+[Flownative Github Action for releasing Helm charts](https://github.com/flownative/action-helm-release).
+The actual Github action refers to a pre-built image in its
+`Dockerfile`, so that the action image does not have to be re-built on
+every use.

entrypoint.sh

@@ -42,4 +42,4 @@ cd "${INPUT_CHARTS_FOLDER}"
 
 helm inspect chart "${INPUT_CHART_NAME}"
 helm package --app-version "${INPUT_APP_VERSION}" --version "${INPUT_CHART_VERSION}" "${INPUT_CHART_NAME}"
-helm push "${INPUT_CHART_NAME}-${INPUT_CHART_VERSION}.tgz" "${INPUT_REPOSITORY_URL}" --username "${INPUT_REPOSITORY_USER}" --password "${INPUT_REPOSITORY_PASSWORD}" --force
+helm cm-push "${INPUT_CHART_NAME}-${INPUT_CHART_VERSION}.tgz" "${INPUT_REPOSITORY_URL}" --username "${INPUT_REPOSITORY_USER}" --password "${INPUT_REPOSITORY_PASSWORD}" --force