netlify: Europa port

- Fix netlify.#Deploy (there's still FIXMEs)
- Externalize the `deploy.sh` script
- Add tests
- Misc engine fixes for more explicit error messages

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

pkg/universe.dagger.io/netlify/deploy.sh

@@ -1 +0,0 @@
-deploy.sh.cue

pkg/universe.dagger.io/netlify/deploy.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -e -o pipefail
+
+NETLIFY_AUTH_TOKEN="$(cat /run/secrets/token)"
+export NETLIFY_AUTH_TOKEN
+
+create_site() {
+	url="https://api.netlify.com/api/v1/${NETLIFY_ACCOUNT:-}/sites"
+
+	curl -s -S --fail-with-body -H "Authorization: Bearer $NETLIFY_AUTH_TOKEN" \
+		-X POST -H "Content-Type: application/json" \
+		"$url" \
+		-d "{\"name\": \"${NETLIFY_SITE_NAME}\", \"custom_domain\": \"${NETLIFY_DOMAIN}\"}" -o body
+
+	# shellcheck disable=SC2181
+	if [ $? -ne 0 ]; then
+		cat body >&2
+		exit 1
+	fi
+
+	jq -r '.site_id' body
+}
+
+site_id=$(curl -s -S -f -H "Authorization: Bearer $NETLIFY_AUTH_TOKEN" \
+		"https://api.netlify.com/api/v1/sites?filter=all" | \
+		jq -r ".[] | select(.name==\"$NETLIFY_SITE_NAME\") | .id" \
+	)
+if [ -z "$site_id" ] ; then
+	if [ "${NETLIFY_SITE_CREATE:-}" != 1 ]; then
+		echo "Site $NETLIFY_SITE_NAME does not exist"
+		exit 1
+	fi
+	site_id=$(create_site)
+	if [ -z "$site_id" ]; then
+		echo "create site failed"
+		exit 1
+	fi
+fi
+
+netlify link --id "$site_id"
+netlify build
+
+netlify deploy \
+	--dir="$(pwd)" \
+	--site="$site_id" \
+	--prod \
+| tee /tmp/stdout
+
+url="$(</tmp/stdout grep Website | grep -Eo 'https://[^ >]+' | head -1)"
+deployUrl="$(</tmp/stdout grep Unique | grep -Eo 'https://[^ >]+' | head -1)"
+logsUrl="$(</tmp/stdout grep Logs | grep -Eo 'https://[^ >]+' | head -1)"
+
+# Write output files
+mkdir -p /netlify
+echo -n "$url" > /netlify/url
+echo -n "$deployUrl" > /netlify/deployUrl
+echo -n "$logsUrl" > /netlify/logsUrl