Dockerfile

FROM alpine:edge

# variable "VERSION" must be passed as docker environment variables during the image build
# docker build --no-cache --build-arg VERSION=2.12.0 -t alpine/helm:2.12.0 .

ARG HELM_VERSION=2.14.3
ARG KUBECTL_VERSION=1.13.10
ARG AWS_IAM_AUTH_VERSION=0.4.0

# Install helm (latest release)
# ENV BASE_URL="https://storage.googleapis.com/kubernetes-helm"
ENV BASE_URL="https://get.helm.sh"
ENV TAR_FILE="helm-v${HELM_VERSION}-linux-amd64.tar.gz"
RUN apk add --update --no-cache curl ca-certificates && \
    curl -L ${BASE_URL}/${TAR_FILE} |tar xvz && \
    mv linux-amd64/helm /usr/bin/helm && \
    chmod +x /usr/bin/helm && \
    rm -rf linux-amd64 && \
    apk del curl && \
    rm -f /var/cache/apk/*

# Install kubectl (same version of aws esk)
RUN apk add --update --no-cache curl && \
    curl -LO https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl && \
    mv kubectl /usr/bin/kubectl && \
    chmod +x /usr/bin/kubectl && \
    apk del curl && \
    rm -f /var/cache/apk/*


# Install aws-iam-authenticator (latest version)
RUN apk add --update --no-cache curl && \
    curl -LO https://github.com/kubernetes-sigs/aws-iam-authenticator/releases/download/v${AWS_IAM_AUTH_VERSION}/aws-iam-authenticator_0.4.0_linux_amd64 && \
    mv aws-iam-authenticator_0.4.0_linux_amd64 /usr/bin/aws-iam-authenticator && \
    chmod +x /usr/bin/aws-iam-authenticator && \
    apk del curl && \
    rm -f /var/cache/apk/*

# Install eksctl (latest version)
RUN curl --silent --location "https://github.com/weaveworks/eksctl/releases/download/latest_release/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp && \
    mv /tmp/eksctl /usr/bin && \
    chmod +x /usr/bin/eksctl

WORKDIR /apps