Install helm within Dockerfile

Dockerfile

@@ -2,14 +2,17 @@ FROM alpine:3.12
 
 ARG KUBECTL_VERSION="1.17.7"
 
-RUN apk add py-pip curl
+RUN apk add py-pip curl wget
 RUN pip install awscli
 RUN curl -L -o /usr/bin/kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.17.7/2020-07-08/bin/linux/amd64/kubectl
 RUN chmod +x /usr/bin/kubectl
 
 RUN curl -o /usr/bin/aws-iam-authenticator https://amazon-eks.s3.us-west-2.amazonaws.com/1.17.7/2020-07-08/bin/linux/amd64/aws-iam-authenticator
 RUN chmod +x /usr/bin/aws-iam-authenticator
 
+RUN wget https://get.helm.sh/helm-v3.2.4-linux-amd64.tar.gz -O - | tar -xzO linux-amd64/helm > /usr/local/bin/helm 
+RUN chmod +x /usr/local/bin/helm
+
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod  +x /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]