Runtime Configuration

The Runtime section on the container Docker Settings page overrides the default work directory and command from the Docker image. Leave a field empty to keep the image default. Edit the fields and use Save to stage the change, which is applied through the project deploy flow.

Work Directory

Work Directory is the directory the container runs in. Leave it empty to use the working directory defined in the image, or set an absolute path (starting with /) to override it. Common values are /app and /usr/src/app.

Command

Command is what runs when the container starts. Leave it empty to fall back to the CMD or ENTRYPOINT from the image, or type your own command with any arguments, such as node server.js, python app.py, or java -jar app.jar.

Make sure the command runs in the foreground so the container does not exit right after it starts.