173 lines
6.9 KiB
Bash
173 lines
6.9 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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# ──────────────────────────────
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# Config & helpers
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# ──────────────────────────────
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LOGFILE="${LOGFILE:-/var/log/docker-install.log}"
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: > "$LOGFILE" || { echo "Cannot write $LOGFILE (need root?)"; exit 1; }
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if [[ ${EUID:-$(id -u)} -ne 0 ]]; then SUDO="sudo"; else SUDO=""; fi
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TARGET_USER="${SUDO_USER:-$USER}"
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GREEN=$(tput setaf 2 || true); CYAN=$(tput setaf 6 || true); RESET=$(tput sgr0 || true)
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BOLD=$(tput bold || true); NORM=$(tput sgr0 || true)
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log() { echo -e "${CYAN}$*${RESET}" | tee -a "$LOGFILE"; }
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ok() { echo -e "${GREEN}$*${RESET}" | tee -a "$LOGFILE"; }
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run() { eval "$@" >>"$LOGFILE" 2>&1; }
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ascii="
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${CYAN}
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=++++
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*####
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-====
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.****:-****.=***+
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:####-=####.*#### :
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.====.:==== -==== -##=
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+***=.****:-****.=***+ ****= ####*
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####*:####-=####.*#### ####+ *####*###*=
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====-.====.:==== -==== ====: -########*.
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-+++++++++++++++++++++++++++++++**#####==-:
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=#####################################:
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:###################################*.
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*#################################=
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.*##############################+.
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+##########################*-
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.=*####################+-.
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.-=+**######**+=-:.
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${RESET}"
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clear
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echo -e "$ascii"
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# ──────────────────────────────
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# Arguments
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# ──────────────────────────────
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ACTION="install" # install | uninstall
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PURGE_REPO="no" # yes | no
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for arg in "${@:-}"; do
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case "$arg" in
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--uninstall|-u) ACTION="uninstall" ;;
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--purge-repo) PURGE_REPO="yes" ;;
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--help|-h)
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cat <<USAGE
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Usage:
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$0 # installs Docker (default)
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$0 --uninstall # uninstalls Docker (keeps /opt/docker)
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$0 -u --purge-repo # uninstalls Docker + removes APT repo and GPG key
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Logs: ${LOGFILE}
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USAGE
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exit 0
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;;
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esac
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done
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# ──────────────────────────────
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# OS Detection
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# ──────────────────────────────
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if [[ -r /etc/os-release ]]; then . /etc/os-release; else
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echo "Cannot detect distribution (missing /etc/os-release)." >&2; exit 1; fi
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case "${ID:-}" in
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ubuntu) BASE_URL="https://download.docker.com/linux/ubuntu" ;;
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debian) BASE_URL="https://download.docker.com/linux/debian" ;;
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*) echo "Unsupported distribution: ${ID:-unknown}. (Ubuntu/Debian only)"; exit 1 ;;
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esac
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CODENAME="${VERSION_CODENAME:-}"
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if [[ -z "$CODENAME" ]] && command -v lsb_release >/dev/null 2>&1; then CODENAME="$(lsb_release -cs)"; fi
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if [[ -z "$CODENAME" ]]; then echo "Unable to determine codename (VERSION_CODENAME)." >&2; exit 1; fi
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ARCH="$(dpkg --print-architecture)"
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PRETTY="${PRETTY_NAME:-$ID}"
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LISTFILE="/etc/apt/sources.list.d/docker.list"
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KEYFILE="/etc/apt/keyrings/docker.asc"
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REPO_LINE="deb [arch=${ARCH} signed-by=${KEYFILE}] ${BASE_URL} ${CODENAME} stable"
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echo -e "Mode: ${CYAN}${BOLD}${ACTION^^}${RESET} | ${BOLD}${PRETTY}${RESET} (${BOLD}${CODENAME}${RESET}), arch=${CYAN}${ARCH}${RESET}"
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echo -e "Detailed logs: ${CYAN}${LOGFILE}${RESET}\n"
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# ──────────────────────────────
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# INSTALL Functions
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# ──────────────────────────────
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install_docker() {
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echo -e "${CYAN}1) Installing prerequisites (ca-certificates, curl, gnupg, acl)${RESET}"
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run "$SUDO apt-get update -y"
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run "$SUDO apt-get install -y ca-certificates curl gnupg acl"
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echo -e "${CYAN}2) Preparing Docker keyring${RESET}"
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run "$SUDO install -m 0755 -d /etc/apt/keyrings"
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if [[ ! -f "$KEYFILE" ]]; then
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run "$SUDO curl -fsSL ${BASE_URL}/gpg -o ${KEYFILE}"
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run "$SUDO chmod a+r ${KEYFILE}"
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fi
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echo -e "${CYAN}3) Adding Docker APT repository (stable)${RESET}"
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echo "$REPO_LINE" | $SUDO tee "$LISTFILE" >/dev/null
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run "$SUDO apt-get update -y"
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echo -e "${CYAN}4) Installing Docker Engine + Buildx + Compose${RESET}"
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run "$SUDO apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin"
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echo -e "${CYAN}5) Enabling Docker service${RESET}"
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run "$SUDO systemctl enable --now docker"
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echo -e "${CYAN}6) Managing docker group and adding user${RESET}"
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if ! getent group docker >/dev/null 2>&1; then run "$SUDO groupadd docker"; fi
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if ! id -nG "$TARGET_USER" | grep -qw docker; then run "$SUDO usermod -aG docker '$TARGET_USER'"; fi
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echo -e "${CYAN}7) Creating and setting permissions for /opt/docker${RESET}"
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run "$SUDO mkdir -p /opt/docker"
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run "$SUDO chown root:docker /opt/docker"
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run "$SUDO chmod 2770 /opt/docker"
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run "$SUDO setfacl -R -m g:docker:rwx /opt/docker"
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run "$SUDO setfacl -R -d -m g:docker:rwx /opt/docker"
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echo -e "${CYAN}8) Verifying installation (hello-world)${RESET}"
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run "$SUDO docker run --rm hello-world"
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echo ""; ok "✅ Docker installation and verification completed."
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echo -e "Log out and log back in (${BOLD}logout/login${NORM}) to use Docker without sudo."
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}
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# ──────────────────────────────
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# UNINSTALL Functions
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# ──────────────────────────────
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uninstall_docker() {
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echo -e "${CYAN}1) Stopping Docker service (if running)${RESET}"
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if $SUDO systemctl is-active --quiet docker; then run "$SUDO systemctl stop docker"; fi
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run "$SUDO systemctl disable docker || true"
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echo -e "${CYAN}2) Removing Docker packages${RESET}"
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PKGS="docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras docker-scan-plugin docker.io"
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run "$SUDO DEBIAN_FRONTEND=noninteractive apt-get purge -y $PKGS || true"
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echo -e "${CYAN}3) Cleaning up dependencies${RESET}"
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run "$SUDO apt-get autoremove -y --purge || true"
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if [[ "$PURGE_REPO" == "yes" ]]; then
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echo -e "${CYAN}4) Removing Docker APT repo and GPG key${RESET}"
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run "$SUDO rm -f '$LISTFILE' || true"
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run "$SUDO rm -f '$KEYFILE' || true"
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run "$SUDO apt-get update -y || true"
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STEP_NEXT=5
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else
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STEP_NEXT=4
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fi
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echo -e "${CYAN}${STEP_NEXT}) Keeping local data and /opt/docker (no deletion)${RESET}"
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echo -e "${CYAN} → /opt/docker, /var/lib/docker, and /var/lib/containerd are NOT touched.${RESET}"
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echo ""; ok "🧹 Docker uninstallation complete (packages removed, data kept)."
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echo -e "You can manually delete ${BOLD}/var/lib/docker${NORM} and ${BOLD}/var/lib/containerd${NORM} if you want a full cleanup."
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}
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# ──────────────────────────────
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# Main
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# ──────────────────────────────
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case "$ACTION" in
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install) install_docker ;;
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uninstall) uninstall_docker ;;
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esac
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