[CI] Update docker environment

.github/workflows/.autobuild.yml

@@ -21,6 +21,10 @@ jobs:
     container:
       image: secondstate/substrate-ssvm
 
+    strategy:
+      matrix:
+        toolchain: ['stable']
+
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
@@ -31,4 +35,7 @@ jobs:
       run: |
         ln -sf /root/.rustup $HOME/
         ln -sf /root/.cargo $HOME/
-        cargo build --release
+        rustup toolchain install ${{ matrix.toolchain }}
+        rustup target add wasm32-unknown-unknown --toolchain ${{ matrix.toolchain }}
+        rustup default ${{ matrix.toolchain }}
+        cargo build --release

Dockerfile

@@ -1,12 +1,23 @@
 FROM secondstate/ssvm:latest
-ENV PATH="/root/.cargo/bin:${PATH}"
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG RUSTUP_TOOLCHAIN=nightly-2020-10-06
+ENV RUSTUP_HOME=/usr/local/rustup \
+    CARGO_HOME=/usr/local/cargo \
+    PATH=/usr/local/cargo/bin:$PATH
 
 # Install rust
-RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
-RUN rustup update nightly && rustup update stable
-RUN rustup target add wasm32-unknown-unknown --toolchain nightly
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y \
+    && cargo install cargo-wasi
+RUN rustup toolchain install ${RUSTUP_TOOLCHAIN} \
+    && rustup target add wasm32-unknown-unknown --toolchain ${RUSTUP_TOOLCHAIN} \
+    && rustup target add wasm32-unknown-unknown --toolchain stable \
+    && rustup default stable
 
 # Install yarn
-RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
-RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list
-RUN apt update && apt install -y yarn
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
+    && echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list
+RUN apt update \
+    && apt install -y yarn
+
+RUN rm -rf /var/lib/apt/lists/*