feat: Add Dockerfile

Dockerfile

@@ -0,0 +1,42 @@
+# ========================
+# Build Stage
+# ========================
+FROM rust:1.89.0-alpine3.20 AS builder
+
+# Install build dependencies, including static OpenSSL libraries
+RUN apk add --no-cache \
+    pkgconfig \
+    build-base \
+    curl
+
+# Set the working directory
+WORKDIR /usr/src/app
+
+# Copy over Cargo.toml and Cargo.lock for dependency caching
+COPY Cargo.toml Cargo.lock ./
+
+# Copy over all the source code
+COPY . .
+
+# Build the project in release mode for the MUSL target
+RUN cargo build --release --bin homegate
+
+# ========================
+# Runtime Stage
+# ========================
+FROM alpine:3.20
+
+# Install runtime dependencies (only ca-certificates)
+RUN apk add --no-cache ca-certificates
+
+# Copy the compiled binary from the builder stage
+COPY --from=builder /usr/src/app/target/release/homegate /usr/local/bin/homegate
+
+# Set the working directory
+WORKDIR /usr/local/bin
+
+# Expose the port the homegate listens on (should match that of config.toml)
+EXPOSE 8080
+
+# Set the default command to run the binary
+CMD ["homegate"]