webdestroya / placeholder-http-docker

Docker Placeholder HTTP App

This provides a placeholder web app that can be used to test deployment system and anything else that assumes a web service is available at a specific endpoint.

Usage

$ docker run --rm -p 8080:8080 webdestroya/http-placeholder:latest

Endpoints

• /health: returns a 200 OK and the text "OK"
• /favicon.ico: returns a 404
• /robots.txt: returns a Robots file to disable indexing
• /###: returns a page with the corresponding error code provided
• /headers: returns request headers
• /environment: returns a JSON hash of the environment variables for the container (if enabled)
• All Others: returns a welcome page

Configuration

Environment Variable	Default	Description
PLACEHOLDER_SHOW_ENV	true	Whether to show the /environment page. Possible values are: true: show all vars (default) false: show nothing list: show env vars in PLACEHOLDER_ENV_LIST
PLACEHOLDER_HEALTHCHECK	/health	The path to use for the healthcheck
PLACEHOLDER_APP_NAME	Placeholder	The name of the app. Shown on index page
PLACEHOLDER_ROBOTS	true	Whether to respond to the robots.txt request
PLACEHOLDER_ENV_LIST		A comma separated list of env vars to show. (When PLACEHOLDER_SHOW_ENV is set to list)
PORT	8080	Default port to serve app on