Serve remote spec by URL:

docker run -it --rm -p 80:80 \
  -e SPEC_URL='http://localhost:8000/swagger.yaml' redocly/redoc

Serve local file:

docker run -it --rm -p 80:80 \
  -v $(pwd)/demo/swagger.yaml:/usr/share/nginx/html/swagger.yaml \
  -e SPEC_URL=swagger.yaml redocly/redoc

• PAGE_TITLE (default "ReDoc") - page title
• PAGE_FAVICON (default "favicon.png") - URL to page favicon
• SPEC_URL (default "http://petstore.swagger.io/v2/swagger.json") - URL to spec
• PORT (default 80) - nginx port
• REDOC_OPTIONS - <redoc> tag attributes

docker build -t redocly/redoc .