Update setup Dockerfile - adjust helm tarball path (#484)

* Update setup Dockerfile - adjust helm tarball path

* Correct missing chained run tag

Author: sbathgate

docker/setup/Dockerfile

@@ -9,14 +9,13 @@ ENV NGINX_INGRESS_VERSION="0.3.7"
 RUN apk add -q --no-cache \
     jq=1.5-r2 \
     sshpass=1.05-r0 \
-    curl=7.59.0-r0 && \
-  curl -sLfO "https://storage.googleapis.com/kubernetes-helm/helm-v${HELM_VERSION}-linux-amd64.tar.gz" && \
-  tar xf "helm-v${HELM_VERSION}-linux-amd64.tar.gz" && \
-  mv "linux-amd64/helm" /usr/local/bin/helm && \
-  chmod +x /usr/local/bin/helm && \
-  rm -rf "linux-amd64" "helm-v${HELM_VERSION}-linux-amd64.tar.gz" && \
-  az aks install-cli --client-version "${KUBECTL_VERSION}" && \
-  mkdir /secrets
+  && wget -q "https://get.helm.sh/helm-v${HELM_VERSION}-linux-amd64.tar.gz" \
+  && tar xf "helm-v${HELM_VERSION}-linux-amd64.tar.gz" \
+  && mv "linux-amd64/helm" /usr/local/bin/helm \
+  && chmod +x /usr/local/bin/helm \
+  && rm -rf "linux-amd64" "helm-v${HELM_VERSION}-linux-amd64.tar.gz" \
+  && az aks install-cli --client-version "${KUBECTL_VERSION}" \
+  && mkdir /secrets
 
 COPY docker/setup/requirements.txt ./
 RUN pip install --no-cache-dir -r requirements.txt