This article explains how to containerize chains.


Containerization is a software distribution process that bundles an application's code with all the necessary files and libraries required to run it on any infrastructure. InfraBlockchain also supports containerization for all chains within it, and the relevant methods are described below.

Creating a Container Image

Let's explore how to create a Docker container image.

To create a container image, you need a 'Dockerfile'. Here, we'll explain how to create a container image for the Relay Chain. If you want to create a container image for a different chain, please visit the link below and check the desired chain repository.

FROM ubuntu:jammy AS builder

# The node will be built in this directory
WORKDIR /infra-relay-chain

RUN apt -y update && \
  apt install -y --no-install-recommends \
  software-properties-common llvm curl git file binutils binutils-dev \
  make cmake ca-certificates clang g++ zip dpkg-dev openssl gettext \
  build-essential pkg-config libssl-dev libudev-dev time clang protobuf-compiler

# install rustup
RUN curl -sSf | sh -s -- -y

# rustup directory
ENV PATH /root/.cargo/bin:$PATH

# setup rust nightly channel, pinning specific version as newer versions have a regression
RUN rustup install nightly-2023-05-21

RUN rustup default nightly-2023-05-21

# install wasm toolchain for substrate
RUN rustup target add wasm32-unknown-unknown --toolchain nightly-2023-02-20

#compiler ENV
ENV CC clang

# Copy code to build directory, instead of only using .dockerignore, we copy elements
# explicitly. This lets us cache build results while iterating on scripts.
COPY . .

RUN echo 'Building in release mode.' ; \
    cargo build --release ; \
    mv /infra-relay-chain/target/release/infra-relaychain /infra-relay-chain/target/; 

# Final stage. Copy the node executable and the script
FROM ubuntu:jammy

WORKDIR /infra-relay-chain

COPY --from=builder /infra-relay-chain/target/infrablockspace .

# curl is required for uploading to keystore
# note: `subkey insert` is a potential alternarve to curl
RUN apt -y update \
  && apt install -y --no-install-recommends curl \
  && rm -rf /var/lib/apt/lists/*

# expose node ports
EXPOSE 30333 9933 9944


ENTRYPOINT ["./infrablockspace"]
CMD []

Once you have completed writing the relevant files, use the following command to generate the container image:

docker build -t <tag name>:<version> .

The ways to utilize the generated image are mentioned in the deployment section.

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