1FROM ubuntu:20.0423ENV DEBIAN_FRONTEND=noninteractive4ENV TZ=Etc/UTC56RUN apt-get update && apt-get install -y git curl libssl-dev llvm pkg-config libclang-dev clang git make cmake78ENV CARGO_HOME="/cargo-home"9ENV PATH="/cargo-home/bin:$PATH"1011RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain none1213ARG RUST_TOOLCHAIN=14ARG POLKADOT_BUILD_BRANCH=15ARG BRANCH=16ARG REPO_URL=17ARG FEATURE=1819RUN rustup toolchain uninstall $(rustup toolchain list) && \20 rustup toolchain install $RUST_TOOLCHAIN && \21 rustup default $RUST_TOOLCHAIN && \22 rustup target add wasm32-unknown-unknown --toolchain $RUST_TOOLCHAIN2324RUN mkdir /dev_chain && git clone $REPO_URL -b $BRANCH /dev_chain25WORKDIR /dev_chain2627RUN cargo build --release2829CMD cargo run --release --features=$FEATURE -- --dev -linfo --unsafe-ws-external --rpc-cors=all --unsafe-rpc-external