waja / gist:7956f29659644822b5a669bacf128a1b

#!/bin/bash # wget https://gist.githubusercontent.com/waja/0deb4dd5cd759371270dc3e1f5dabcb5/raw/deploy_rootlessdocker.sh -O /tmp/a && sh /tmp/a # Check if dockerd is installed [ $(which dockerd) ] || wget https://gist.githubusercontent.com/waja/01ba2641f93f461044f9/raw/docker_deploy.sh \ -O /tmp/docker_deploy.sh && bash /tmp/docker_deploy.sh # Stop and disable dockerd (runs as root) systemctl stop docker && systemctl disable docker # Install curl and needed (new) slirp4netns apt update && apt install -y curl && \ apt -t buster-backports install -y slirp4netns # Download and install docker rootless # Inspired by https://github.com/docker/docker-install/blob/master/rootless-install.sh tmp=$(mktemp -d) trap "rm -rf $tmp" EXIT INT TERM STATIC_RELEASE_ROOTLESS_URL="https://master.dockerproject.org/linux/x86_64/docker-rootless-extras.tgz" ROOTLESS_BIN="/usr/local/bin/" cd "$tmp" curl -L -o rootless.tgz "$STATIC_RELEASE_ROOTLESS_URL" tar zxf "$tmp/rootless.tgz" -C "$ROOTLESS_BIN" --strip-components=1 cat <<EOF | sh -x apt install -y uidmap cat <<EOT > /etc/sysctl.d/50-docker-rootless.conf # https://github.com/moby/moby/blob/master/docs/rootless.md#debian-gnulinux kernel.unprivileged_userns_clone = 1 EOT sysctl --system EOF global_priv_ports() { cat <<EOF >> /etc/sysctl.d/50-docker-rootless.conf # https://github.com/moby/moby/blob/master/docs/rootless.md#exposing-privileged-ports net.ipv4.ip_unprivileged_port_start = 0 EOF sysctl --system } # maybe instead of allowing every user to bind on unprivileged ports via sysctl you may set capabilities just for `rootlesskit`. More restriced (and secure) but needs to be set again when redeploying the binary if [ "${1}" = "--global-priv-ports" ]; then global_priv_ports else if command -v setcap > /dev/null && setcap cap_net_bind_service=ep "$ROOTLESS_BIN/rootlesskit"; then echo "Exposing privileged ports by setcap worked" else global_priv_ports fi fi # https://github.com/moby/moby/blob/master/docs/rootless.md#debian-gnulinux # Make use of overlay2 storage cat <<EOF > /etc/modprobe.d/docker-rootless.conf options overlay permit_mounts_in_userns=1 EOF #(Re)loading overlay kernel module rmmod overlay 2> /dev/null; modprobe overlay permit_mounts_in_userns=1 # Set some environment variables and create needed directory cat <<EOF > /etc/profile.d/docker-rootless.sh export XDG_RUNTIME_DIR=/tmp/docker-\${UID} [ -d \${XDG_RUNTIME_DIR} ] || mkdir \${XDG_RUNTIME_DIR} export DOCKER_HOST=unix:///tmp/docker-\${UID}/docker.sock export PATH=\$PATH:/sbin alias dockerd-rootless='dockerd-rootless.sh --experimental --storage-driver overlay2' EOF