Simplify CMD: Remove shell parameter expansion, rely on ENV defaults #31

	name: Docker Image CI

	on:
	push:
	release:
	types: [published]
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Extract metadata
	id: meta
	run: \|
	if [[ $GITHUB_REF == refs/tags/* ]]; then
	TAG=${GITHUB_REF#refs/tags/}
	else
	TAG=${GITHUB_REF#refs/heads/}
	fi
	echo "tag=$TAG" >> $GITHUB_OUTPUT

	- name: Test NGINX configuration
	run: \|
	UPSTREAM_SERVER=owl.virtualflybrain.org:80 CACHE_MAX_SIZE=20g DNS_RESOLVER="8.8.8.8 1.1.1.1" envsubst '${UPSTREAM_SERVER} ${CACHE_MAX_SIZE} ${DNS_RESOLVER}' < nginx.conf.template > test-nginx.conf
	docker run --rm -v $(pwd)/test-nginx.conf:/tmp/nginx.conf nginx:1.26-alpine nginx -t -c /tmp/nginx.conf

	- name: Build test Docker image
	run: docker build --no-cache . --file Dockerfile --tag test-image

	- name: Test container startup
	run: \|
	docker run -d --name test-container test-image
	sleep 5
	if docker ps \| grep -q test-container; then
	echo "Container is running successfully"
	else
	echo "Container failed to start"
	docker logs test-container
	exit 1
	fi
	docker stop test-container \|\| true
	docker rm test-container

	- name: Build Docker image
	run: docker build . --file Dockerfile --tag virtualflybrain/owl_cache:${{ steps.meta.outputs.tag }}

	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKER_HUB_USER }}
	password: ${{ secrets.DOCKER_HUB_PASSWORD }}

	- name: Push Docker image
	run: docker push virtualflybrain/owl_cache:${{ steps.meta.outputs.tag }}

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