Merge branch 'master' into renovate/docker.io-library-alpine-3.x

Dockerfile

@@ -2,7 +2,15 @@ FROM docker.io/library/alpine:3.15
 
 ARG HELM_VERSION
 
-COPY install.sh /install.sh
-RUN VERSION=${HELM_VERSION} /install.sh
+RUN apk add bash curl git openssl && \
+    curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 --output /tmp/install.sh
 
-ENTRYPOINT [ "/usr/bin/helm" ]
+RUN [[ ${HELM_VERSION} == "" ]]; bash /tmp/install.sh
+RUN [[ ${HELM_VERSION} != "" ]]; bash /tmp/install.sh --version ${HELM_VERSION}
+
+RUN rm /tmp/install.sh
+
+# Install additionally cm-push plugin
+RUN helm plugin install https://github.com/chartmuseum/helm-push.git
+
+ENTRYPOINT [ "/usr/local/bin/helm" ]