Revert from alpine to phusion and include wasm build (paritytech#2482)

* Revert from alpine to phusion and include wasm build

* Update Dockerfile

.dockerignore

@@ -1,5 +1,5 @@
 doc
-target
+**target*
 .idea/
 Dockerfile
 .dockerignore

Dockerfile

@@ -1,38 +1,55 @@
-FROM alpine:edge AS builder
+# Note: We don't use Alpine and its packaged Rust/Cargo because they're too often out of date,
+# preventing them from being used to build Substrate/Polkadot.
+
+FROM phusion/baseimage:0.10.2 as builder
 LABEL maintainer="chevdor@gmail.com"
 LABEL description="This is the build stage for Substrate. Here we create the binary."
 
-RUN apk add build-base \
-    cmake \
-    linux-headers \
-    openssl-dev \
-    clang-dev \
-    cargo
-
 ARG PROFILE=release
 WORKDIR /substrate
 
 COPY . /substrate
 
-RUN cargo build --$PROFILE
+RUN apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install -y cmake pkg-config libssl-dev git clang
+
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y && \
+	export PATH="$PATH:$HOME/.cargo/bin" && \
+	rustup toolchain install nightly && \
+	rustup target add wasm32-unknown-unknown --toolchain nightly && \
+	cargo install --git https://github.com/alexcrichton/wasm-gc && \
+	rustup default nightly && \
+ 	./scripts/build.sh && \
+ 	rustup default stable && \
+	cargo build --$PROFILE
 
 # ===== SECOND STAGE ======
 
-FROM alpine:edge
+FROM phusion/baseimage:0.10.2
 LABEL maintainer="chevdor@gmail.com"
 LABEL description="This is the 2nd stage: a very small image where we copy the Substrate binary."
 ARG PROFILE=release
+
+RUN mv /usr/share/ca* /tmp && \
+	rm -rf /usr/share/*  && \
+	mv /tmp/ca-certificates /usr/share/ && \
+	mkdir -p /root/.local/share/Polkadot && \
+	ln -s /root/.local/share/Polkadot /data && \
+	useradd -m -u 1000 -U -s /bin/sh -d /substrate substrate
+
 COPY --from=builder /substrate/target/$PROFILE/substrate /usr/local/bin
 
-RUN apk add --no-cache ca-certificates \
-    libstdc++ \
-    openssl
+# checks
+RUN ldd /usr/local/bin/substrate && \
+	/usr/local/bin/substrate --version
 
+# Shrinking
 RUN rm -rf /usr/lib/python* && \
-	mkdir -p /root/.local/share/Substrate && \
-	ln -s /root/.local/share/Substrate /data
+	rm -rf /usr/bin /usr/sbin /usr/share/man
 
+USER substrate
 EXPOSE 30333 9933 9944
 VOLUME ["/data"]
 
-ENTRYPOINT ["/usr/local/bin/substrate"]
+CMD ["/usr/local/bin/substrate"]