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