Dockerfile.base

# https://alpinelinux.org/releases
FROM alpine:3.20

# https://github.com/kubernetes/kubernetes/releases
ARG KUBECTL_VERSION=1.30.3
# https://github.com/kubernetes-sigs/krew/releases
ARG KREW_VERSION=0.4.4
# https://github.com/ahmetb/kubectx/releases
ARG KUBECTX_VERSION=0.9.5
# https://github.com/helm/helm/releases
ARG HELM_VERSION=3.15.3

ENV KUBECONFIG="/root/.kube/config"
ENV KREW_ROOT="/root/.krew"

RUN echo "$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')" > /tmp/bin-arch && cat /tmp/bin-arch

RUN apk upgrade --update && apk --no-cache add \
  git \
  github-cli \
  make \
  curl \
  jq \
  yq \
  bash \
  openssl

# kubectl
RUN curl -sSL "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/$(cat /tmp/bin-arch)/kubectl" -o /usr/local/bin/kubectl && \
  curl -sSL "https://dl.k8s.io/v${KUBECTL_VERSION}/bin/linux/$(cat /tmp/bin-arch)/kubectl.sha256" -o /tmp/kubectl.sha256 && \
  echo "$(cat /tmp/kubectl.sha256)  /usr/local/bin/kubectl" | sha256sum -c && rm /tmp/kubectl.sha256 && \
  chmod +x /usr/local/bin/kubectl && \
  kubectl version --client --output=json

# krew and klock plugin
RUN TMPDIR="$(mktemp -d)" && \
  curl -sSL "https://github.com/kubernetes-sigs/krew/releases/download/v${KREW_VERSION}/krew-linux_$(cat /tmp/bin-arch).tar.gz" | tar -xzf - -C ${TMPDIR} && \
  "${TMPDIR}/krew-linux_$(cat /tmp/bin-arch)" install krew && \
  rm -frv ${TMPDIR} && PATH="${KREW_ROOT}/bin:$PATH" && kubectl krew version && \
  kubectl krew install klock

# kubectx and kubens
RUN curl -sSL "https://github.com/ahmetb/kubectx/releases/download/v${KUBECTX_VERSION}/kubectx_v${KUBECTX_VERSION}_linux_$(uname -m | sed 's/aarch64/arm64/').tar.gz" | tar -xzf - -C /usr/local/bin && \
  curl -sSL "https://github.com/ahmetb/kubectx/releases/download/v${KUBECTX_VERSION}/kubens_v${KUBECTX_VERSION}_linux_$(uname -m | sed 's/aarch64/arm64/').tar.gz" | tar -xzf - -C /usr/local/bin

# helm
RUN curl -sSL "https://git.io/get_helm.sh" | bash -s -- --version "v${HELM_VERSION}" && \
  helm version

COPY .bashrc /root/
CMD ["/bin/bash"]