Update Dockerfile

deployment/docker/Dockerfile

@@ -18,6 +18,7 @@ RUN apk add curl
 RUN apk add openssl
 RUN apk add maven
 RUN apk add make
+RUN apk add build-essential
 RUN curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 && \
     chmod +x get_helm.sh && \
     ./get_helm.sh