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Last active March 20, 2025 09:45
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K3s in VS Code Devcontainer
Raw
README.md

K3s in VS Code Devcontainer

mkdir ~/ctrk3s && cd ~/ctrk3s
git clone https://gist.github.com/revant/2cfff3d63216f2d36557c4e098b810cb .devcontainer
code .

Reopen in VSCode Devcontainer to start playing around with k3s in devcontainer.

Raw
compose.yml
version: "3.7"
services:
kubectl:
build: .
command: ["tail", "-f", "/dev/null"]
environment:
- SHELL=/bin/zsh
volumes:
- ..:/workspace
- ${HOME}/.ssh:/home/castlecraft/.ssh
working_dir: /workspace
k3s:
image: registry.gitlab.com/gitlab-org/cluster-integration/test-utils/k3s-gitlab-ci/releases/v1.31.2-k3s1:latest
command:
- server
- --tls-san=k3s
- --disable=traefik
volumes:
- k3s:/var/lib/rancher/k3s
tmpfs:
- /run
- /var/run
privileged: true
ports:
- 80:80
- 443:443
volumes:
k3s:
Raw
devcontainer.json
{
"name": "K3s in devcontainer",
"remoteUser": "castlecraft",
"customizations": {
"settings": {
"debug.node.autoAttach": "disabled"
},
"extensions": [
"ms-python.python",
"visualstudioexptteam.vscodeintellicode"
]
},
"dockerComposeFile": "./compose.yml",
"service": "kubectl",
"workspaceFolder": "/workspace",
"shutdownAction": "stopCompose"
}
Raw
Dockerfile
FROM debian:bookworm-slim
COPY entrypoint.sh /entrypoint.sh
RUN apt-get update \
&& DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
locales \
ca-certificates \
curl \
sudo \
zsh \
&& rm -rf /var/lib/apt/lists/* \
&& sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
&& dpkg-reconfigure --frontend=noninteractive locales
RUN groupadd -g 1000 castlecraft \
&& useradd --no-log-init -r -m -u 1000 -g 1000 -G sudo castlecraft \
&& echo "castlecraft ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
ENV KUBECONFIG=/home/castlecraft/.kube/config
USER castlecraft
WORKDIR /home/castlecraft
# Install Tools
RUN sudo curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" && \
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl && \
curl -fsSL https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | sudo bash && \
mkdir -p /home/castlecraft/.kube && \
sudo chmod +x /entrypoint.sh
RUN sh -c "$(curl -L https://github.com/deluan/zsh-in-docker/releases/download/v1.2.1/zsh-in-docker.sh)" -- \
-p git \
-p kubectl \
-p https://github.com/zsh-users/zsh-autosuggestions \
-p https://github.com/zsh-users/zsh-completions
ENTRYPOINT [ "/entrypoint.sh" ]
Raw
entrypoint.sh
#!/bin/bash
kubectl get svc 1>/dev/null || curl -sSL k3s:8081>"${KUBECONFIG}"
exec "$@"
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