chore(ci): publish to docker

* ci: publish to docker

* update release.yaml

* update Dockerfile

Dockerfile

@@ -0,0 +1,10 @@
+FROM rust:1.61 as builder
+RUN rustup target add x86_64-unknown-linux-musl
+RUN apt-get update && apt-get install --no-install-recommends -y musl-tools
+WORKDIR /app
+COPY . .
+RUN cargo build --target x86_64-unknown-linux-musl --release
+
+FROM alpine
+COPY --from=builder /app/target/x86_64-unknown-linux-musl/release/duf /bin/
+ENTRYPOINT ["/bin/duf"]