Add rust-toolchain into buildenv

.circleci/images/plume-buildenv/Dockerfile

@@ -12,6 +12,9 @@ RUN apt update &&\
     apt install -y --no-install-recommends binutils-dev build-essential cmake curl gcc gettext git libcurl4-openssl-dev libdw-dev libelf-dev libiberty-dev libpq-dev libsqlite3-dev libssl-dev make openssl pkg-config postgresql postgresql-contrib python zlib1g-dev python3-venv python3-dev zip unzip libclang-dev clang caddy crowdin3 &&\
     rm -rf /var/lib/apt/lists/*
 
+#stick rust environment
+COPY rust-toolchain ./
+
 #compile some deps
 RUN cargo install wasm-pack &&\
     cargo install grcov &&\

.circleci/images/plume-buildenv/rust-toolchain

@@ -0,0 +1 @@
+nightly-2022-01-27