add Dockerfile (#8)

Author: masci

.dockerignore

@@ -0,0 +1,4 @@
+target
+.git
+.github
+.claude

Dockerfile

@@ -0,0 +1,24 @@
+# Stage 1: Build the application
+FROM rust:alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache musl-dev
+
+# Create a new empty shell project
+WORKDIR /usr/src/roy
+COPY . .
+
+# Build for release
+RUN cargo build --release
+
+# Stage 2: Create the final, lightweight image
+FROM alpine:latest
+
+# Copy the compiled binary from the builder stage
+COPY --from=builder /usr/src/roy/target/release/roy /usr/local/bin/roy
+
+# Expose the port the app runs on
+EXPOSE 8000
+
+# Set the entrypoint
+CMD ["roy", "-vvv"]

src/lib.rs

@@ -34,7 +34,7 @@ pub struct Args {
     #[arg(long, help = "Port to listen on", default_value = "8000")]
     pub port: u16,
 
-    #[arg(long, help = "Address to listen on", default_value = "127.0.0.1")]
+    #[arg(long, help = "Address to listen on", default_value = "0.0.0.0")]
     pub address: IpAddr,
 
     #[arg(