Add Dockerfile and README.md

Dockerfile

@@ -0,0 +1,11 @@
+FROM clux/muslrust:stable as builder
+WORKDIR /volume
+COPY ./Cargo.toml ./Cargo.toml
+COPY ./Cargo.lock ./Cargo.lock
+COPY ./src ./src
+RUN cargo build --release
+
+FROM alpine:latest
+COPY --from=builder /volume/target/x86_64-unknown-linux-musl/release/hass-wol /app/hass-wol
+VOLUME /data
+CMD ["/app/hass-wol", "/config.toml", "/data"]

README.md

@@ -0,0 +1,55 @@
+# hass-wol
+
+> Wake-on-LAN (WoL) for your Home Assistant
+
+## Usage
+
+This tool is intended to be used as a companion container to the Home Assistant container.
+
+Your `docker-compose.yml` may look like this:
+
+```yaml
+version: "3.9"
+
+services:
+  homeassistant:
+    image: "homeassistant/home-assistant"
+    # ...
+
+  hass-wol:
+    image: "git.moritzruth.de/moritzruth/hass-wol:1.0.0"
+    restart: unless-stopped
+    network_mode: host  # this is required because WoL uses UDP broadcast packets
+    volumes:
+      - "./hass-wol.toml:/config.toml:ro"
+      - "./data:/data"  # persistent data
+```
+
+And your `hass-wol.toml` like this:
+
+```toml
+broadcast_address = "255.255.255.255"  # don’t change this if you don’t need to
+
+[mqtt]
+host = "MQTT_BROKER_IP_ADDRESS"
+port = 1883
+client_id = "hass-wol"
+credentials = { user = "USER", password = "PASSWORD" }
+
+[[host]]
+display_name = "my_pc"
+mac_address = "04:1B:BF:2D:C7:70"
+
+[[host]]
+display_name = "my_server"
+mac_address = "20:5D:48:98:94:C0"
+
+# These options are optional.
+# hass_identifiers = []  # see https://www.home-assistant.io/integrations/button.mqtt/#identifiers
+# packet_count = 6
+# ms_between_packets = 500
+```
+
+## License
+
+hass-wol is licensed under the [Blue Oak Model License 1.0.0](./LICENSE.md).

src/main.rs

@@ -1,6 +1,6 @@
 use std::collections::{HashMap, HashSet};
 use std::env;
-use std::net::{IpAddr, SocketAddr};
+use std::net::IpAddr;
 use std::path::{Path, PathBuf};
 use std::process::exit;
 use std::str::FromStr;