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231 lines
8.7 KiB
Bash
231 lines
8.7 KiB
Bash
#!/usr/bin/env bash
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#-------------------------------------------------------------------------------------------------------------
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# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
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#-------------------------------------------------------------------------------------------------------------
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#
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# Docs: https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/docs/docker-in-docker.md
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# Maintainer: The VS Code and Codespaces Teams
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#
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# Syntax: ./docker-in-docker-debian.sh [enable non-root docker access flag] [non-root user] [use moby]
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ENABLE_NONROOT_DOCKER=${1:-"true"}
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USERNAME=${2:-"automatic"}
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USE_MOBY=${3:-"true"}
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MICROSOFT_GPG_KEYS_URI="https://packages.microsoft.com/keys/microsoft.asc"
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set -e
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if [ "$(id -u)" -ne 0 ]; then
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echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
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exit 1
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fi
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# Determine the appropriate non-root user
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if [ "${USERNAME}" = "auto" ] || [ "${USERNAME}" = "automatic" ]; then
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USERNAME=""
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POSSIBLE_USERS=("vscode" "node" "codespace" "$(awk -v val=1000 -F ":" '$3==val{print $1}' /etc/passwd)")
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for CURRENT_USER in ${POSSIBLE_USERS[@]}; do
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if id -u ${CURRENT_USER} > /dev/null 2>&1; then
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USERNAME=${CURRENT_USER}
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break
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fi
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done
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if [ "${USERNAME}" = "" ]; then
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USERNAME=root
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fi
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elif [ "${USERNAME}" = "none" ] || ! id -u ${USERNAME} > /dev/null 2>&1; then
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USERNAME=root
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fi
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# Get central common setting
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get_common_setting() {
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if [ "${common_settings_file_loaded}" != "true" ]; then
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curl -sfL "https://aka.ms/vscode-dev-containers/script-library/settings.env" 2>/dev/null -o /tmp/vsdc-settings.env || echo "Could not download settings file. Skipping."
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common_settings_file_loaded=true
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fi
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if [ -f "/tmp/vsdc-settings.env" ]; then
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local multi_line=""
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if [ "$2" = "true" ]; then multi_line="-z"; fi
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local result="$(grep ${multi_line} -oP "$1=\"?\K[^\"]+" /tmp/vsdc-settings.env | tr -d '\0')"
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if [ ! -z "${result}" ]; then declare -g $1="${result}"; fi
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fi
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echo "$1=${!1}"
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}
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# Function to run apt-get if needed
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apt_get_update_if_needed()
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{
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if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
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echo "Running apt-get update..."
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apt-get update
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else
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echo "Skipping apt-get update."
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fi
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}
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# Checks if packages are installed and installs them if not
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check_packages() {
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if ! dpkg -s "$@" > /dev/null 2>&1; then
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apt_get_update_if_needed
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apt-get -y install --no-install-recommends "$@"
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fi
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}
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# Ensure apt is in non-interactive to avoid prompts
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export DEBIAN_FRONTEND=noninteractive
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# Install dependencies
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check_packages apt-transport-https curl ca-certificates lxc pigz iptables gnupg2
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# Swap to legacy iptables for compatibility
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if type iptables-legacy > /dev/null 2>&1; then
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update-alternatives --set iptables /usr/sbin/iptables-legacy
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update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
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fi
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# Install Docker / Moby CLI if not already installed
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if type docker > /dev/null 2>&1 && type dockerd > /dev/null 2>&1; then
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echo "Docker / Moby CLI and Engine already installed."
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else
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# Source /etc/os-release to get OS info
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. /etc/os-release
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if [ "${USE_MOBY}" = "true" ]; then
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# Import key safely (new 'signed-by' method rather than deprecated apt-key approach) and install
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get_common_setting MICROSOFT_GPG_KEYS_URI
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curl -sSL ${MICROSOFT_GPG_KEYS_URI} | gpg --dearmor > /usr/share/keyrings/microsoft-archive-keyring.gpg
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echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/microsoft-archive-keyring.gpg] https://packages.microsoft.com/repos/microsoft-${ID}-${VERSION_CODENAME}-prod ${VERSION_CODENAME} main" > /etc/apt/sources.list.d/microsoft.list
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apt-get update
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apt-get -y install --no-install-recommends moby-cli moby-buildx moby-compose moby-engine
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else
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# Import key safely (new 'signed-by' method rather than deprecated apt-key approach) and install
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curl -fsSL https://download.docker.com/linux/${ID}/gpg | gpg --dearmor > /usr/share/keyrings/docker-archive-keyring.gpg
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echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/${ID} ${VERSION_CODENAME} stable" > /etc/apt/sources.list.d/docker.list
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apt-get update
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apt-get -y install --no-install-recommends docker-ce-cli docker-ce
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fi
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fi
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echo "Finished installing docker / moby"
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# Install Docker Compose if not already installed and is on a supported architecture
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if type docker-compose > /dev/null 2>&1; then
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echo "Docker Compose already installed."
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else
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TARGET_COMPOSE_ARCH="$(uname -m)"
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if [ "${TARGET_COMPOSE_ARCH}" = "amd64" ]; then
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TARGET_COMPOSE_ARCH="x86_64"
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fi
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if [ "${TARGET_COMPOSE_ARCH}" != "x86_64" ]; then
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# Use pip to get a version that runns on this architecture
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if ! dpkg -s python3-minimal python3-pip libffi-dev python3-venv pipx > /dev/null 2>&1; then
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apt_get_update_if_needed
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apt-get -y install python3-minimal python3-pip libffi-dev python3-venv pipx
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fi
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export PIPX_HOME=/usr/local/pipx
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mkdir -p ${PIPX_HOME}
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export PIPX_BIN_DIR=/usr/local/bin
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export PIP_CACHE_DIR=/tmp/pip-tmp/cache
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pipx install --system-site-packages --pip-args '--no-cache-dir --force-reinstall' docker-compose
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rm -rf /tmp/pip-tmp
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else
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LATEST_COMPOSE_VERSION=$(basename "$(curl -fsSL -o /dev/null -w "%{url_effective}" https://github.com/docker/compose/releases/latest)")
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curl -fsSL "https://github.com/docker/compose/releases/download/${LATEST_COMPOSE_VERSION}/docker-compose-$(uname -s)-${TARGET_COMPOSE_ARCH}" -o /usr/local/bin/docker-compose
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chmod +x /usr/local/bin/docker-compose
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fi
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fi
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# If init file already exists, exit
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if [ -f "/usr/local/share/docker-init.sh" ]; then
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echo "/usr/local/share/docker-init.sh already exists, so exiting."
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exit 0
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fi
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echo "docker-init doesnt exist..."
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# Add user to the docker group
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if [ "${ENABLE_NONROOT_DOCKER}" = "true" ]; then
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if ! getent group docker > /dev/null 2>&1; then
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groupadd docker
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fi
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usermod -aG docker ${USERNAME}
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fi
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tee /usr/local/share/docker-init.sh > /dev/null \
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<< 'EOF'
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#!/usr/bin/env bash
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#-------------------------------------------------------------------------------------------------------------
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# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
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#-------------------------------------------------------------------------------------------------------------
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sudoIf()
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{
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if [ "$(id -u)" -ne 0 ]; then
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sudo "$@"
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else
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"$@"
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fi
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}
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# explicitly remove dockerd and containerd PID file to ensure that it can start properly if it was stopped uncleanly
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# ie: docker kill <ID>
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sudoIf find /run /var/run -iname 'docker*.pid' -delete || :
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sudoIf find /run /var/run -iname 'container*.pid' -delete || :
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set -e
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## Dind wrapper script from docker team
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# Maintained: https://github.com/moby/moby/blob/master/hack/dind
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export container=docker
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if [ -d /sys/kernel/security ] && ! sudoIf mountpoint -q /sys/kernel/security; then
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sudoIf mount -t securityfs none /sys/kernel/security || {
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echo >&2 'Could not mount /sys/kernel/security.'
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echo >&2 'AppArmor detection and --privileged mode might break.'
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}
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fi
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# Mount /tmp (conditionally)
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if ! sudoIf mountpoint -q /tmp; then
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sudoIf mount -t tmpfs none /tmp
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fi
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# cgroup v2: enable nesting
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if [ -f /sys/fs/cgroup/cgroup.controllers ]; then
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# move the init process (PID 1) from the root group to the /init group,
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# otherwise writing subtree_control fails with EBUSY.
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sudoIf mkdir -p /sys/fs/cgroup/init
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sudoIf echo 1 > /sys/fs/cgroup/init/cgroup.procs
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# enable controllers
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sudoIf sed -e 's/ / +/g' -e 's/^/+/' < /sys/fs/cgroup/cgroup.controllers \
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> /sys/fs/cgroup/cgroup.subtree_control
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fi
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## Dind wrapper over.
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# Handle DNS
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set +e
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cat /etc/resolv.conf | grep -i 'internal.cloudapp.net'
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if [ $? -eq 0 ]
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then
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echo "Setting dockerd Azure DNS."
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CUSTOMDNS="--dns 168.63.129.16"
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else
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echo "Not setting dockerd DNS manually."
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CUSTOMDNS=""
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fi
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set -e
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# Start docker/moby engine
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( sudoIf dockerd $CUSTOMDNS > /tmp/dockerd.log 2>&1 ) &
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set +e
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# Execute whatever commands were passed in (if any). This allows us
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# to set this script to ENTRYPOINT while still executing the default CMD.
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exec "$@"
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EOF
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chmod +x /usr/local/share/docker-init.sh
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chown ${USERNAME}:root /usr/local/share/docker-init.sh
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