✨ feat: add autocomplete for development

[gjrtimmer]

Motivation

I was missing autocomplete during development, so I added it to make my life easier.

Description

This PR will update the .devcontainer/post-install.sh script to install bash autocomplete for the various development tools. This will make development easier, faster, and more convenient for the developers.

Bash autocomplete is already part of the golang:1.25 image.

Impact

None

Affected Tools

• kind
• kubebuilder
• kubectl
• docker

[k8s-ci-robot]

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This pull-request has been approved by: gjrtimmer
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[k8s-ci-robot]

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[Copilot]

Pull Request Overview

This PR adds bash autocompletion support for development tools (kind, kubebuilder, kubectl, and docker) to improve developer experience in devcontainer environments.

Key Changes:

• Added autocompletion setup scripts for kind, kubebuilder, kubectl, and docker after their respective installations
• Implemented idempotent marker-based checks to prevent duplicate autocompletion entries

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
testdata/project-v4/.devcontainer/post-install.sh	Added autocompletion configuration for all four tools in v4 project template
testdata/project-v4-with-plugins/.devcontainer/post-install.sh	Added autocompletion configuration for all four tools in v4-with-plugins template
testdata/project-v4-multigroup/.devcontainer/post-install.sh	Added autocompletion configuration for all four tools in v4-multigroup template
pkg/plugins/golang/v4/scaffolds/internal/templates/devcontainer.go	Updated devcontainer template to generate autocompletion setup code
docs/book/src/multiversion-tutorial/testdata/project/.devcontainer/post-install.sh	Added autocompletion configuration for multiversion tutorial
docs/book/src/getting-started/testdata/project/.devcontainer/post-install.sh	Added autocompletion configuration for getting-started tutorial
docs/book/src/cronjob-tutorial/testdata/project/.devcontainer/post-install.sh	Added autocompletion configuration for cronjob tutorial

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[camilamacedo86]

Hi @gjrtimmer

Thank you a lot for your contribution 🥇
But we can only add to the default scaffold if we can ensure that the changes will work well in all environments.

In this case, I do not see how we could ensure and be able to know what the profile file for any env and so. I think that will be an issue to allow us to move forward within.

[gjrtimmer]

Hi @gjrtimmer

Thank you a lot for your contribution 🥇 But we can only add to the default scaffold if we can ensure that the changes will work well in all environments.

In this case, I do not see how we could ensure and be able to know what the profile file for any env and so. I think that will be an issue to allow us to move forward within.

Hi @camilamacedo86

This involves the post-install of the devcontainer. Any other environment used by a developer is not the responsibility of this repository. However, this repository provides a devcontainer. All these changes are within that devcontainer, which sets the default environment to bash.

Please clarify your line of reasoning regarding this change and how it applies to the devcontainer development environment, as the devcontainer environment is fixed to ensure an easy, consistent development environment for all developers. This is can can adjust the PR if required.

[camilamacedo86]

Hi @gjrtimmer

that is a good point 👍 but I think we should change it out like: #5144 (comment)

Could you please squash the commits?
We need to have 1 commit to get it merged.

Also, can you please check the suggestion.

[camilamacedo86]

I think we should install the autocompletion files under /etc/bash_completion.d/ instead of editing $HOME/.bashrc, because it makes the setup cleaner and works automatically for all users in the Dev Container without touching their personal shell files.

#!/bin/bash
set -x

BASH_COMPLETIONS_DIR="/etc/bash_completion.d"
mkdir -p "$BASH_COMPLETIONS_DIR"

# ------------------ kind ------------------
curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-$(go env GOARCH)
chmod +x ./kind
mv ./kind /usr/local/bin/kind

# Install bash completion (no dotfile edits)
if command -v kind >/dev/null 2>&1; then
    kind completion bash > "${BASH_COMPLETIONS_DIR}/kind" || true
fi

# ------------------ kubebuilder ------------------
curl -L -o kubebuilder https://go.kubebuilder.io/dl/latest/linux/$(go env GOARCH)
chmod +x kubebuilder
mv kubebuilder /usr/local/bin/

# Install bash completion (no dotfile edits)
if command -v kubebuilder >/dev/null 2>&1; then
    kubebuilder completion bash > "${BASH_COMPLETIONS_DIR}/kubebuilder" || true
fi

# ------------------ kubectl ------------------
KUBECTL_VERSION=$(curl -L -s https://dl.k8s.io/release/stable.txt)
curl -LO "https://dl.k8s.io/release/$KUBECTL_VERSION/bin/linux/$(go env GOARCH)/kubectl"
chmod +x kubectl
mv kubectl /usr/local/bin/kubectl

# Install bash completion (no dotfile edits)
if command -v kubectl >/dev/null 2>&1; then
    kubectl completion bash > "${BASH_COMPLETIONS_DIR}/kubectl" || true
fi

# ------------------ docker (optional) ------------------
# Only try to install docker completion if docker exists in the container
if command -v docker >/dev/null 2>&1; then
    # some docker builds support `docker completion`
    docker completion bash > "${BASH_COMPLETIONS_DIR}/docker" || true
fi

# ------------------ network for kind ------------------
docker network create -d=bridge --subnet=172.19.0.0/24 kind

# ------------------ versions ------------------
kind version
kubebuilder version
docker --version
go version
kubectl version --client

[gjrtimmer]

@camilamacedo86 Agreed; I will test this out and verify that everything works, because sometimes the bash_completion.d does not get loaded correctly in a devcontainer. I will verify and commit any changes later.