feat: ✨ enhance Docker image with engram, aleph, and shell env setup #3

	---
	name: Pull Request validation

	on:
	pull_request:
	types:
	- opened
	- reopened
	- synchronize
	- ready_for_review

	concurrency:
	group: pr-validation-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	pre-commit:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	id: checkout
	uses: actions/checkout@v5

	- name: Setup toolchain with mise
	uses: jdx/mise-action@v2

	- name: Run prek hooks
	run: prek run --all-files --show-diff-on-failure --color=always

	- name: Build Docker image if Dockerfile changed
	run: \|
	if git diff --name-only origin/${{ github.base_ref }} \| grep -q '^Dockerfile$'; then
	echo "Dockerfile changed — building image..."
	docker build -t opencode-cli-pr:latest .
	else
	echo "Dockerfile not changed — skipping build."
	fi

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