Docker Kicker

A stupid-simple web app to receive web requests and in response kick off a container instance.

In its current state, it is not advisable to use this in a production setting. And DEFINITELY don't expose this to the Internet.

Config

Set the following environment variables:

KICKER_CONNECTCONFIG=path/to/connect/config.json
KICKER_PORT=41331
KICKER_CONFIG=path/to/config.json

Connect Config JSON

Should parse to any valid connect configuration for (Docker Modem)[https://github.com/apocas/docker-modem].

{
    "docker": {
        "socketPath":"",
        "protocol":"",
        "host":"",
        "port":1
    },
    "proxy": {
        // See: https://github.com/neekware/fullerstack/tree/main/libs/nax-ipware

        // List of trusted proxies
        "proxyList": ["172.16."],
        // When known, the number of proxies that requests pass through
        "count": 1
    }
}

Config JSON

Describes what container to launch and what web URL will launch it.

In the below example, POSTing to http(s)://docker-kicker.your.org/ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 would try to launch an instance of docker/image:tag.

{
    // Unique name for the configuration
    "name": "config name",
    // The key to pass to the web app to launch the below container instance
    "key": "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789",
    // IP restrictions
    "allowFrom": ["IPv6", "IPv4", ...],
    // Docker image + tag
    "image": "docker/image:tag",
    // Generate dynamic env vars from query string params. This is an allowlist; any other query params will be ignored.
    "queryParamsToEnv": ["SOME_VARIABLE_ENV_VAR"],
    // Startup command
    "cmd": ["command", ...],
    // Docker API Container Create options
    "createOptions": {
        // See: https://docs.docker.com/engine/api/v1.37/#operation/ContainerCreate
        "Env": [
            "FOO=abc",
            "BAR=123",
            ...
        ],
        ...
    },
    // Maximum number of instances launched from this config allowed to run simultaneously
    "limit": 2
}