Adds container image

Dockerfile

@@ -0,0 +1,20 @@
+FROM rust:1-slim-bookworm AS builder
+ADD Cargo.* .
+ADD src/* src/
+RUN apt update && \
+    apt install -y libssl-dev pkg-config && \
+    cargo build --release && \
+    cp target/release/airnope /usr/local/bin && \
+    cargo clean && \
+    apt purge -y libssl-dev pkg-config && \
+    apt autoremove -y && \
+    rm -rf /var/lib/apt/lists/*
+
+FROM debian:bookworm-slim
+COPY --from=builder /usr/local/bin/airnope /usr/local/bin/airnope
+RUN apt update && \
+    apt install -y ca-certificates openssl && \
+    apt autoremove -y && \
+    rm -rf /var/lib/apt/lists/*
+CMD ["airnope"]
+

README.md

@@ -19,7 +19,28 @@ A simple, silent bot that keeps [Telegram](https://telegram.org/) groups free fr
 
 ## Developing and contributing
 
-Requires an environment variable called `TELOXIDE_TOKEN` with the Telegram API token.
+### Requirements
+
+AirNope requires an environment variable called `TELOXIDE_TOKEN` with the [Telegram API token](https://core.telegram.org/bots/#how-do-i-create-a-bot).
+
+### Running it
+
+To avoid attackers trying to bring the server down, this bot does not use a webhook strategy. To start the daemon, run:
+
+```console
+$ cargo run
+```
+
+Or, if you don't have [`rustup`](https://www.rust-lang.org/tools/install), you can use the container image:
+
+```console
+$ docker build -t airnope .
+$ docker run -e TELOXIDE_TOKEN=<YOUR TELEGRAM API TOKEN> -d airnope
+```
+
+### Before opening a PR
+
+Make sure these checks pass:
 
 ```console
 $ cargo test