Cargo.toml

[package]
name = "ircclient"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
failure = "0.1.8"
futures = "0.3.26"
irc = "0.15.0"
tokio = { version = "1", features = ["macros", "rt-multi-thread"] }

[[bin]]
name = "ircclient"
path = "main.rs"

Dockerfile

FROM rust as build
ADD ./Cargo.toml /app/Cargo.toml
ADD ./src /app/src
WORKDIR /app
RUN cargo build --release
FROM scratch
COPY --from=build /app/target/release/ircclient /ircclient

main.rs

use irc::client::prelude::*;
use futures::prelude::*;

#[tokio::main]
async fn main() -> Result<(), failure::Error> {
    // We can also load the Config at runtime via Config::load("path/to/config.toml")
    let config = Config {
        nickname: Some("the-irc-crate".to_owned()),
        server: Some("irc.libera.chat".to_owned()),
        channels: vec!["#hakierspejs".to_owned()],
        ..Config::default()
    };

    let mut client = Client::from_config(config).await?;
    client.identify()?;

    let mut stream = client.stream()?;

    while let Some(message) = stream.next().await.transpose()? {
        match message.command {
            Command::PRIVMSG(ref channel, ref cmd) => {
                println!("{}", cmd);
            }
            _ => (),
        }
    }

    Ok(())
}