A Dockerfile for https://octant.dev/

build.sh

#!/usr/bin/env bash

OCTANT_IMAGE=dsiebel/octant
OCTANT_VERSION=0.11.1

docker build \
  --tag ${OCTANT_IMAGE}:${OCTANT_VERSION} \
  --build-arg OCTANT_VERSION=${OCTANT_VERSION} \
  --file ./octant.Dockerfile \
  .

octant.Dockerfile

FROM debian:stretch-slim as octant-build

WORKDIR /

RUN DEBIAN_FRONTEND=noninteractive; \
    apt-get update && \
    apt-get install \
    --auto-remove \
    --no-install-recommends \
    --no-install-suggests \
    --show-upgraded \
    --yes \
    ca-certificates \
    curl

ARG OCTANT_VERSION
RUN curl -L -O "https://github.com/vmware-tanzu/octant/releases/download/v${OCTANT_VERSION}/octant_${OCTANT_VERSION}_Linux-64bit.tar.gz" \
    && tar -xzf octant_${OCTANT_VERSION}_Linux-64bit.tar.gz \
    && cp octant_${OCTANT_VERSION}_Linux-64bit/octant /octant

FROM scratch as octant

WORKDIR /tmp

COPY --from=octant-build /octant /octant

EXPOSE 7777

VOLUME /kubeconfig

ENTRYPOINT [ "/octant", \
  "--disable-open-browser", \
  "--listener-addr", "0.0.0.0:7777" \
  "--kubeconfig", "/kubeconfig" ]

Switching contexts doesn't work right now if the context requires auth. For GKE for example it requires gcloud-sdk which most likely will not be installed where it is on the host system...
Workaround: switch to the context you want to look at, then run octant-docker.