This app can be used in scenarios where you need multiple website instances that do nothing, but look different. This app displays a web page with a message in the center of the page. The colors (background and foreground) and the message are configurable through environment variables.
| Environment variable name | Description |
|---|---|
BG_COLOR |
Background color for the website (defaults to ⬛️) |
FG_COLOR |
Foreground (text) color (defaults to ⬜️) |
MESSAGE |
Message to be displayed (defaults to background color name, if not provided) |
VERSION |
App version, returned from /version endpoint (defaults to package version, if not provided) |
The colors can be provided as names (red, green) or as HEX values (#FF0000, #00ff00).
| Command | Rendered Page |
|---|---|
node app.js |
 |
FG_COLOR=blue BG_COLOR=lightgreen node app.js |
 |
MESSAGE="Hello world!" FG_COLOR="#f3f4f6" BG_COLOR="#2563eb" node app.js |
 |
You can also run the application as a Docker container. You can pull the image from pj3677/color-app:1.0.0.
Example usage:
docker run --env FG_COLOR="blue" -p 3000:3000 pj3677/color-app:1.0.0