Refactor dockerfiles. (#156)

Dockerfile

@@ -1,25 +1,49 @@
-FROM ubuntu:latest as builder
-ARG DEBIAN_FRONTEND=noninteractive
-
-COPY . shadow
-RUN apt-get update && apt-get -y upgrade \
-    && apt-get -y install golang cargo libssl-dev clang-tools \
-    && cd shadow \
-    && cargo build --release -vv \
-    && mkdir /target \
-    && cp /shadow/target/release/shadow /target \
-    && cp /usr/local/lib/libdarwinia_shadow.so /target \
-    && cp /lib/x86_64-linux-gnu/libssl.so.1.1 /target \
-    && cp /lib/x86_64-linux-gnu/libcrypto.so.1.1 /target
-
-FROM ubuntu:latest
-COPY --from=builder /target /target
-RUN apt-get update -y \
-    && apt-get install -y ca-certificates \
-    && rm -rf /var/lib/apt/lists/* \
-    && mv /target/shadow /usr/bin \
-    && mv /target/* /usr/lib \
-    && rm -rf /target \
-    && ldconfig
-
-ENTRYPOINT ["shadow"]
+FROM rust:1 as builder
+
+ENV CARGO_TERM_COLOR=always
+ENV LIBRARY_TYPE=static
+
+RUN apt-get update
+RUN apt-get install -y clang
+
+##
+# Update Rust toolchains
+##
+
+ARG RUST_TOOLCHAIN=nightly-2021-02-28
+RUN rustup update \
+    && rustup install ${RUST_TOOLCHAIN} \
+    && rustup default ${RUST_TOOLCHAIN}
+
+##
+# Install Go
+##
+
+RUN wget https://golang.org/dl/go1.15.1.linux-amd64.tar.gz
+RUN tar -C /usr/local -xvzf go*.linux-amd64.tar.gz
+
+ENV PATH="$PATH:/usr/local/go/bin"
+RUN go version
+
+##
+# Build
+##
+
+WORKDIR /src
+COPY . .
+
+RUN cargo build --release
+
+##
+# Final stage
+##
+
+FROM debian:stable-slim
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /src/target/release/shadow /usr/local/bin/
+
+ENTRYPOINT [ "/usr/local/bin/shadow" ]