Dockerfile.light

# Stage 1: Build celestia-node from source using Ubuntu
FROM ubuntu:22.04 as builder

# Install necessary packages, including Go, Git, and build tools
RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    curl \
    wget \
    && rm -rf /var/lib/apt/lists/*

# Install Go (version 1.23)
RUN wget https://go.dev/dl/go1.23.0.linux-amd64.tar.gz \
    && tar -C /usr/local -xzf go1.23.0.linux-amd64.tar.gz \
    && rm go1.23.0.linux-amd64.tar.gz

# Set Go environment variables
ENV PATH="/usr/local/go/bin:${PATH}"

# Set the working directory
WORKDIR /app

# Clone the celestia-node repository
RUN git clone https://github.com/celestiaorg/celestia-node.git .

# Checkout the desired version
RUN git checkout v0.15.0

# Build the celestia binary
RUN make build

# Build the cel-key utility
RUN make cel-key

# Stage 2: Set up the runtime environment using a minimal Alpine image
FROM alpine:3.18

# Install required packages
RUN apk add --no-cache ca-certificates curl jq bash

# Set the working directory
WORKDIR /root

# Copy the celestia binary and cel-key utility from the builder stage
COPY --from=builder /app/build/celestia /usr/local/bin/celestia
COPY --from=builder /app/build/cel-key /usr/local/bin/cel-key

# Expose necessary ports
EXPOSE 26658 9090 2121

# Set environment variables
ENV NODE_TYPE="light"
ENV P2P_NETWORK="mocha"
ENV RPC_URL="rpc-mocha.pops.one"

# Initialize the node store
RUN celestia light init --p2p.network "$P2P_NETWORK"

# Entry point to start the light node
CMD ["celestia", "light", "start", "--core.ip", "$RPC_URL", "--p2p.network", "$P2P_NETWORK"]