NODE_ENV: production
BASE_HREF: base href for user interface (defaults to /, change if not served from the root directory)
STATIC_ROOT - root for static assets (defaults to BASE_HREF, change to load static assets from a different server)
API_URL:
CANONICAL_URL - absolute base url for user interface (optional, only required for opensearch and canonical link tags)
NATIVE_ASSET_LABEL - the name of the network native asset (defaults to BTC)
SITE_TITLE - website title for <title> (defaults to Block Explorer)
SITE_DESC - meta description (defaults to Esplora Block Explorer)
HOME_TITLE - text for homepage title (defaults to SITE_TITLE)
SITE_FOOTER - text for page footer (defaults to Powered by esplora)
HEAD_HTML - custom html to inject at the end of
FOOT_HTML - custom html to inject at the end of
CUSTOM_ASSETS - space separated list of static assets to add to the build
CUSTOM_CSS - space separated list of css files to append into style.css
NOSCRIPT_REDIR - redirect noscript users to {request_path}?nojs (should be captured server-side and redirected to the prerender server, also see PRERENDER_URL in dev server options)