Bazel Dev Container Feature

install.sh

#!/bin/bash
set -e

# Versions can be overridden with environment variables
BAZELISK_VERSION="${BAZELISK_VERSION:-v1.10.1}"
BUILDIFIER_VERSION="${BUILDIFIER_VERSION:-v6.0.1}"

LOCAL_BIN="/usr/local/bin"

if [ "$(id -u)" -ne 0 ]; then
    echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
    exit 1
fi

# Bring in distribution info
. /etc/os-release

# Determine package manager and installation command
if type apt-get > /dev/null 2>&1; then
    install_packages() {
        apt-get update -y
        apt-get install -y --no-install-recommends "$@"
        rm -rf /var/lib/apt/lists/*
    }
elif type microdnf > /dev/null 2>&1; then
    install_packages() {
        microdnf install -y "$@"
        microdnf clean all
    }
elif type dnf > /dev/null 2>&1; then
    install_packages() {
        dnf install -y "$@"
        dnf clean all
    }
elif type yum > /dev/null 2>&1; then
    install_packages() {
        yum install -y "$@"
        yum clean all
    }
else
    echo "Unsupported package manager"
    exit 1
fi

# Install dependencies
echo "Installing dependencies..."
install_packages curl ca-certificates

# Determine architecture
architecture="$(uname -m)"
case $architecture in
    x86_64) ARCHITECTURE="amd64";;
    aarch64 | armv8*) ARCHITECTURE="arm64";;
    *) echo "(!) Architecture $architecture unsupported"; exit 1 ;;
esac

# Determine platform (linux is the most common, but support macOS just in case)
PLATFORM="linux"
if [ "$(uname -s)" = "Darwin" ]; then
    PLATFORM="darwin"
fi

# Function to download from GitHub with support for "latest"
github_download() {
    repo=$1
    version=$2
    artifact=$3
    output=$4
    
    if [ "${version}" = "latest" ]; then
        echo "Determining latest release for ${repo}..."
        version=$(curl -sSL "https://api.github.com/repos/${repo}/releases/latest" | grep -Po '"tag_name": "\K.*?(?=")')
        if [ -z "${version}" ]; then
            echo "Failed to determine latest version for ${repo}"
            exit 1
        fi
        echo "Latest version is ${version}"
    fi
    
    # Remove 'v' prefix from version if it exists for URL construction
    download_version="${version#v}"
    
    URL="https://github.com/${repo}/releases/download/${version}/${artifact}"
    echo "Downloading ${URL} to ${output}"
    curl -fsSL "${URL}" -o "${output}"
    
    if [ $? -ne 0 ]; then
        echo "Download failed for ${URL}"
        exit 1
    fi
}

# Download and install bazelisk
echo "Installing bazelisk ${BAZELISK_VERSION}..."
github_download "bazelbuild/bazelisk" "${BAZELISK_VERSION}" "bazelisk-${PLATFORM}-${ARCHITECTURE}" "${LOCAL_BIN}/bazelisk"
chmod +x "${LOCAL_BIN}/bazelisk"
ln -sf "${LOCAL_BIN}/bazelisk" "${LOCAL_BIN}/bazel"

# Download and install buildifier
echo "Installing buildifier ${BUILDIFIER_VERSION}..."
github_download "bazelbuild/buildtools" "${BUILDIFIER_VERSION}" "buildifier-${PLATFORM}-${ARCHITECTURE}" "${LOCAL_BIN}/buildifier"
chmod +x "${LOCAL_BIN}/buildifier"

echo "Bazel installation completed successfully"