[www] Use `npm ci` instead of `npm install`.
Using `npm ci` prevents npm from modifying the package.json and
package-lock.json files.
@@ -227,7 +227,7 @@ www: www-build
cd www && $(PYTHON) www.py
www-build:
- cd www/frontends/compiler_gym && npm install && npm run build
+ cd www/frontends/compiler_gym && npm ci && npm run build
www-image: www-build
cd www && docker build -t chriscummins/compiler_gym-www .
