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#!/usr/bin/env bash
#-------------------------------------------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information
#-------------------------------------------------------------------------------------------------------------
#
# Docs: https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/docs/go.md
# Maintainer: The VS Code and Codespaces Teams
TARGET_GO_VERSION="${VERSION:-"latest"}"
GOLANGCILINT_VERSION="${GOLANGCILINTVERSION:-"latest"}"
TARGET_GOROOT="${TARGET_GOROOT:-"/usr/local/go"}"
TARGET_GOPATH="${TARGET_GOPATH:-"/go"}"
USERNAME="${USERNAME:-"${_REMOTE_USER:-"automatic"}"}"
INSTALL_GO_TOOLS="${INSTALL_GO_TOOLS:-"true"}"
# https://www.google.com/linuxrepositories/
GO_GPG_KEY_URI="https://dl.google.com/linux/linux_signing_key.pub"
set -e
# Clean up
rm -rf /var/lib/apt/lists/*
if [ "$(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
# Ensure that login shells get the correct path if the user updated the PATH using ENV.
rm -f /etc/profile.d/00-restore-env.sh
echo "export PATH=${PATH//$(sh -lc 'echo $PATH')/\$PATH}" > /etc/profile.d/00-restore-env.sh
chmod +x /etc/profile.d/00-restore-env.sh
# Determine the appropriate non-root user
if [ "${USERNAME}" = "auto" ] || [ "${USERNAME}" = "automatic" ]; then
USERNAME=""
POSSIBLE_USERS=("vscode" "node" "codespace" "$(awk -v val=1000 -F ":" '$3==val{print $1}' /etc/passwd)")
for CURRENT_USER in "${POSSIBLE_USERS[@]}"; do
if id -u ${CURRENT_USER} > /dev/null 2>&1; then
USERNAME=${CURRENT_USER}
break
fi
done
if [ "${USERNAME}" = "" ]; then
USERNAME=root
fi
elif [ "${USERNAME}" = "none" ] || ! id -u ${USERNAME} > /dev/null 2>&1; then
USERNAME=root
fi
# Figure out correct version of a three part version number is not passed
find_version_from_git_tags() {
local variable_name=$1
local requested_version=${!variable_name}
if [ "${requested_version}" = "none" ]; then return; fi
local repository=$2
local prefix=${3:-"tags/v"}
local separator=${4:-"."}
local last_part_optional=${5:-"false"}
if [ "$(echo "${requested_version}" | grep -o "." | wc -l)" != "2" ]; then
local escaped_separator=${separator//./\\.}
local last_part
if [ "${last_part_optional}" = "true" ]; then
last_part="(${escaped_separator}[0-9]+)?"
else
last_part="${escaped_separator}[0-9]+"
fi
local regex="${prefix}\\K[0-9]+${escaped_separator}[0-9]+${last_part}$"
local version_list="$(git ls-remote --tags ${repository} | grep -oP "${regex}" | tr -d ' ' | tr "${separator}" "." | sort -rV)"
if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "current" ] || [ "${requested_version}" = "lts" ]; then
declare -g ${variable_name}="$(echo "${version_list}" | head -n 1)"
else
set +e
declare -g ${variable_name}="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
set -e
fi
fi
if [ -z "${!variable_name}" ] || ! echo "${version_list}" | grep "^${!variable_name//./\\.}$" > /dev/null 2>&1; then
echo -e "Invalid ${variable_name} value: ${requested_version}\nValid values:\n${version_list}" >&2
exit 1
fi
echo "${variable_name}=${!variable_name}"
}
apt_get_update()
{
if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
echo "Running apt-get update..."
apt-get update -y
fi
}
# Checks if packages are installed and installs them if not
check_packages() {
if ! dpkg -s "$@" > /dev/null 2>&1; then
apt_get_update
apt-get -y install --no-install-recommends "$@"
fi
}
export DEBIAN_FRONTEND=noninteractive
# Install curl, tar, git, other dependencies if missing
check_packages curl ca-certificates gnupg2 tar g++ gcc libc6-dev make pkg-config
if ! type git > /dev/null 2>&1; then
check_packages git
fi
# Get closest match for version number specified
find_version_from_git_tags TARGET_GO_VERSION "https://go.googlesource.com/go" "tags/go" "." "true"
architecture="$(uname -m)"
case $architecture in
x86_64) architecture="amd64";;
aarch64 | armv8*) architecture="arm64";;
aarch32 | armv7* | armvhf*) architecture="armv6l";;
i?86) architecture="386";;
*) echo "(!) Architecture $architecture unsupported"; exit 1 ;;
esac
# Install Go
umask 0002
if ! cat /etc/group | grep -e "^golang:" > /dev/null 2>&1; then
groupadd -r golang
fi
usermod -a -G golang "${USERNAME}"
mkdir -p "${TARGET_GOROOT}" "${TARGET_GOPATH}"
if [[ "${TARGET_GO_VERSION}" != "none" ]] && [[ "$(go version)" != *"${TARGET_GO_VERSION}"* ]]; then
# Use a temporary location for gpg keys to avoid polluting image
export GNUPGHOME="/tmp/tmp-gnupg"
mkdir -p ${GNUPGHOME}
chmod 700 ${GNUPGHOME}
curl -sSL -o /tmp/tmp-gnupg/golang_key "${GO_GPG_KEY_URI}"
gpg -q --import /tmp/tmp-gnupg/golang_key
echo "Downloading Go ${TARGET_GO_VERSION}..."
set +e
curl -fsSL -o /tmp/go.tar.gz "https://golang.org/dl/go${TARGET_GO_VERSION}.linux-${architecture}.tar.gz"
exit_code=$?
set -e
if [ "$exit_code" != "0" ]; then
echo "(!) Download failed."
# Try one break fix version number less if we get a failure. Use "set +e" since "set -e" can cause failures in valid scenarios.
set +e
major="$(echo "${TARGET_GO_VERSION}" | grep -oE '^[0-9]+' || echo '')"
minor="$(echo "${TARGET_GO_VERSION}" | grep -oP '^[0-9]+\.\K[0-9]+' || echo '')"
breakfix="$(echo "${TARGET_GO_VERSION}" | grep -oP '^[0-9]+\.[0-9]+\.\K[0-9]+' 2>/dev/null || echo '')"
# Handle Go's odd version pattern where "0" releases omit the last part
if [ "${breakfix}" = "" ] || [ "${breakfix}" = "0" ]; then
((minor=minor-1))
TARGET_GO_VERSION="${major}.${minor}"
# Look for latest version from previous minor release
find_version_from_git_tags TARGET_GO_VERSION "https://go.googlesource.com/go" "tags/go" "." "true"
else
((breakfix=breakfix-1))
if [ "${breakfix}" = "0" ]; then
TARGET_GO_VERSION="${major}.${minor}"
else
TARGET_GO_VERSION="${major}.${minor}.${breakfix}"
fi
fi
set -e
echo "Trying ${TARGET_GO_VERSION}..."
curl -fsSL -o /tmp/go.tar.gz "https://golang.org/dl/go${TARGET_GO_VERSION}.linux-${architecture}.tar.gz"
fi
curl -fsSL -o /tmp/go.tar.gz.asc "https://golang.org/dl/go${TARGET_GO_VERSION}.linux-${architecture}.tar.gz.asc"
gpg --verify /tmp/go.tar.gz.asc /tmp/go.tar.gz
echo "Extracting Go ${TARGET_GO_VERSION}..."
tar -xzf /tmp/go.tar.gz -C "${TARGET_GOROOT}" --strip-components=1
rm -rf /tmp/go.tar.gz /tmp/go.tar.gz.asc /tmp/tmp-gnupg
else
echo "(!) Go is already installed with version ${TARGET_GO_VERSION}. Skipping."
fi
# Install Go tools that are isImportant && !replacedByGopls based on
# https://github.com/golang/vscode-go/blob/v0.38.0/src/goToolsInformation.ts
GO_TOOLS="\
golang.org/x/tools/gopls@latest \
honnef.co/go/tools/cmd/staticcheck@latest \
golang.org/x/lint/golint@latest \
github.com/mgechev/revive@latest \
github.com/go-delve/delve/cmd/dlv@latest \
github.com/fatih/gomodifytags@latest \
github.com/haya14busa/goplay/cmd/goplay@latest \
github.com/cweill/gotests/gotests@latest \
github.com/josharian/impl@latest"
if [ "${INSTALL_GO_TOOLS}" = "true" ]; then
echo "Installing common Go tools..."
export PATH=${TARGET_GOROOT}/bin:${PATH}
mkdir -p /tmp/gotools /usr/local/etc/vscode-dev-containers ${TARGET_GOPATH}/bin
cd /tmp/gotools
export GOPATH=/tmp/gotools
export GOCACHE=/tmp/gotools/cache
# Use go get for versions of go under 1.16
go_install_command=install
if [[ "1.16" > "$(go version | grep -oP 'go\K[0-9]+\.[0-9]+(\.[0-9]+)?')" ]]; then
export GO111MODULE=on
go_install_command=get
echo "Go version < 1.16, using go get."
fi
(echo "${GO_TOOLS}" | xargs -n 1 go ${go_install_command} -v )2>&1 | tee -a /usr/local/etc/vscode-dev-containers/go.log
# Move Go tools into path and clean up
if [ -d /tmp/gotools/bin ]; then
mv /tmp/gotools/bin/* ${TARGET_GOPATH}/bin/
rm -rf /tmp/gotools
fi
# Install golangci-lint from precompiled binares
if [ "$GOLANGCILINT_VERSION" = "latest" ] || [ "$GOLANGCILINT_VERSION" = "" ]; then
echo "Installing golangci-lint latest..."
curl -fsSL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | \
sh -s -- -b "${TARGET_GOPATH}/bin"
else
echo "Installing golangci-lint ${GOLANGCILINT_VERSION}..."
curl -fsSL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | \
sh -s -- -b "${TARGET_GOPATH}/bin" "v${GOLANGCILINT_VERSION}"
fi
fi
chown -R "${USERNAME}:golang" "${TARGET_GOROOT}" "${TARGET_GOPATH}"
chmod -R g+r+w "${TARGET_GOROOT}" "${TARGET_GOPATH}"
find "${TARGET_GOROOT}" -type d -print0 | xargs -n 1 -0 chmod g+s
find "${TARGET_GOPATH}" -type d -print0 | xargs -n 1 -0 chmod g+s
# Clean up
rm -rf /var/lib/apt/lists/*
echo "Done!"
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