Added Dockerfile

Dockerfile

@@ -0,0 +1,17 @@
+FROM rust:alpine AS builder
+
+WORKDIR /phetch
+
+COPY . .
+
+RUN apk add openssl-dev
+
+RUN cargo install --path .
+
+FROM alpine
+
+COPY --from=builder /usr/local/cargo/bin/phetch /usr/local/bin/
+
+RUN chmod +x /usr/local/bin/phetch
+
+ENTRYPOINT ["/usr/local/bin/phetch"]