ArchiveBox/bin/docker_entrypoint.sh

195 lines
12 KiB
Bash
Executable file

#!/bin/bash
# This Docker ENTRYPOINT script is called by `docker run archivebox ...` or `docker compose run archivebox ...`.
# It takes a CMD as $* shell arguments and runs it following these setup steps:
# - Set the archivebox user to use the correct PUID & PGID
# 1. highest precedence is for valid PUID and PGID env vars passsed in explicitly
# 2. fall back to DETECTED_PUID of files found within existing data dir
# 3. fall back to DEFAULT_PUID if no data dir or its owned by root
# - Create a new /data dir if necessary and set the correct ownership on it
# - Create a new /browsers dir if necessary and set the correct ownership on it
# - Check whether we're running inside QEMU emulation and show a warning if so.
# - Check that enough free space is available on / and /data
# - Drop down to archivebox user permisisons and execute passed CMD command.
# Bash Environment Setup
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
# https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html
# set -o xtrace
# set -o nounset
set -o errexit
set -o errtrace
set -o pipefail
# IFS=$'\n'
# Load global invariants (set by Dockerfile during image build time, not intended to be customized by users at runtime)
export DATA_DIR="${DATA_DIR:-/data}"
export ARCHIVEBOX_USER="${ARCHIVEBOX_USER:-archivebox}"
# Global default PUID and PGID if data dir is empty and no intended PUID+PGID is set manually by user
export DEFAULT_PUID=911
export DEFAULT_PGID=911
# If user tires to set PUID and PGID to root values manually, catch and reject because root is not allowed
if [[ "$PUID" == "0" ]]; then
echo -e "\n[X] Error: Got PUID=$PUID and PGID=$PGID but ArchiveBox is not allowed to be run as root, please change or unset PUID & PGID and try again." > /dev/stderr
echo -e " Hint: some NFS/SMB/FUSE/etc. filesystems force-remap/ignore all permissions," > /dev/stderr
echo -e " leave PUID/PGID unset, disable root_squash, or use values the drive prefers (default is $DEFAULT_PUID:$DEFAULT_PGID)" > /dev/stderr
echo -e " https://linux.die.net/man/8/mount.cifs#:~:text=does%20not%20provide%20unix%20ownership" > /dev/stderr
exit 3
fi
# If data directory already exists, autodetect detect owner by looking at files within
export DETECTED_PUID="$(stat -c '%u' "$DATA_DIR/logs/errors.log" 2>/dev/null || echo "$DEFAULT_PUID")"
export DETECTED_PGID="$(stat -c '%g' "$DATA_DIR/logs/errors.log" 2>/dev/null || echo "$DEFAULT_PGID")"
# If data directory exists but is owned by root, use defaults instead of root because root is not allowed
[[ "$DETECTED_PUID" == "0" ]] && export DETECTED_PUID="$DEFAULT_PUID"
# (GUID / DETECTED_GUID is allowed to be 0 though)
# Set archivebox user and group ids to desired PUID/PGID
usermod -o -u "${PUID:-$DETECTED_PUID}" "$ARCHIVEBOX_USER" > /dev/null 2>&1
groupmod -o -g "${PGID:-$DETECTED_PGID}" "$ARCHIVEBOX_USER" > /dev/null 2>&1
# re-set PUID and PGID to values reported by system instead of values we tried to set,
# in case wonky filesystems or Docker setups try to play UID/GID remapping tricks on us
export PUID="$(id -u archivebox)"
export PGID="$(id -g archivebox)"
# Check the permissions of the data dir (or create if it doesn't exist)
if [[ -d "$DATA_DIR/archive" ]]; then
if touch "$DATA_DIR/archive/.permissions_test_safe_to_delete" 2>/dev/null; then
# It's fine, we are able to write to the data directory (as root inside the container)
rm -f "$DATA_DIR/archive/.permissions_test_safe_to_delete"
# echo "[√] Permissions are correct"
else
# the only time this fails is if the host filesystem doesn't allow us to write as root (e.g. some NFS mapall/maproot problems, connection issues, drive dissapeared, etc.)
echo -e "\n[X] Error: archivebox user (PUID=$PUID) is not able to write to your ./data/archive dir (currently owned by $(stat -c '%u' "$DATA_DIR/archive"):$(stat -c '%g' "$DATA_DIR/archive")." > /dev/stderr
echo -e " Change ./data to be owned by PUID=$PUID PGID=$PGID on the host and retry:" > /dev/stderr
echo -e " \$ chown -R $PUID:$PGID ./data\n" > /dev/stderr
echo -e " Configure the PUID & PGID environment variables to change the desired owner:" > /dev/stderr
echo -e " https://docs.linuxserver.io/general/understanding-puid-and-pgid\n" > /dev/stderr
echo -e " Hint: some NFS/SMB/FUSE/etc. filesystems force-remap/ignore all permissions," > /dev/stderr
echo -e " leave PUID/PGID unset, disable root_squash, or use values the drive prefers (default is $DEFAULT_PUID:$DEFAULT_PGID)" > /dev/stderr
echo -e " https://linux.die.net/man/8/mount.cifs#:~:text=does%20not%20provide%20unix%20ownership" > /dev/stderr
exit 3
fi
else
# create data directory (and logs, since its the first dir ArchiveBox needs to write to)
mkdir -p "$DATA_DIR/logs"
fi
# force set the ownership of the data dir contents to the archivebox user and group
# this is needed because Docker Desktop often does not map user permissions from the host properly
chown $PUID:$PGID "$DATA_DIR"
if ! chown $PUID:$PGID "$DATA_DIR"/* > /dev/null 2>&1; then
# users may store the ./data/archive folder on a network mount that prevents chmod/chown
# fallback to chowning everything else in ./data and leaving ./data/archive alone
find "$DATA_DIR" -type d -not -path "$DATA_DIR/archive*" -exec chown $PUID:$PGID {} \; > /dev/null 2>&1
find "$DATA_DIR" -type f -not -path "$DATA_DIR/archive/*" -exec chown $PUID:$PGID {} \; > /dev/null 2>&1
fi
# also chown BROWSERS_DIR because otherwise 'archivebox setup' wont be able to 'playwright install chromium' at runtime
export PLAYWRIGHT_BROWSERS_PATH="${PLAYWRIGHT_BROWSERS_PATH:-/browsers}"
mkdir -p "$PLAYWRIGHT_BROWSERS_PATH/permissions_test_safe_to_delete"
rm -Rf "$PLAYWRIGHT_BROWSERS_PATH/permissions_test_safe_to_delete"
chown $PUID:$PGID "$PLAYWRIGHT_BROWSERS_PATH"
if [[ -d "$PLAYWRIGHT_BROWSERS_PATH/.links" ]]; then
chown $PUID:$PGID "$PLAYWRIGHT_BROWSERS_PATH"/*
chown $PUID:$PGID "$PLAYWRIGHT_BROWSERS_PATH"/.*
chown -h $PUID:$PGID "$PLAYWRIGHT_BROWSERS_PATH"/.links/*
fi
# (this check is written in blood in 2023, QEMU silently breaks things in ways that are not obvious)
export IN_QEMU="$(pmap 1 | grep qemu >/dev/null && echo 'True' || echo 'False')"
if [[ "$IN_QEMU" == "True" ]]; then
echo -e "\n[!] Warning: Running $(uname -m) docker image using QEMU emulation, some things will break!" > /dev/stderr
echo -e " chromium (screenshot, pdf, dom), singlefile, and any dependencies that rely on inotify will not run in QEMU." > /dev/stderr
echo -e " See here for more info: https://github.com/microsoft/playwright/issues/17395#issuecomment-1250830493\n" > /dev/stderr
fi
# check disk space free on /, /data, and /data/archive, warn on <500Mb free, error on <100Mb free
export ROOT_USAGE="$(df --output=pcent,avail / | tail -n 1 | xargs)"
export ROOT_USED_PCT="${ROOT_USAGE%%%*}"
export ROOT_AVAIL_KB="$(echo "$ROOT_USAGE" | awk '{print $2}')"
if [[ "$ROOT_AVAIL_KB" -lt 100000 ]]; then
echo -e "\n[!] Warning: Docker root filesystem is completely out of space! (${ROOT_USED_PCT}% used on /)" > /dev/stderr
echo -e " you need to free up at least 100Mb in your Docker VM to continue:" > /dev/stderr
echo -e " \$ docker system prune\n" > /dev/stderr
df -kh / > /dev/stderr
exit 3
elif [[ "$ROOT_USED_PCT" -ge 99 ]] || [[ "$ROOT_AVAIL_KB" -lt 500000 ]]; then
echo -e "\n[!] Warning: Docker root filesystem is running out of space! (${ROOT_USED_PCT}% used on /)" > /dev/stderr
echo -e " you may need to free up space in your Docker VM soon:" > /dev/stderr
echo -e " \$ docker system prune\n" > /dev/stderr
df -kh / > /dev/stderr
fi
export DATA_USAGE="$(df --output=pcent,avail "$DATA_DIR" | tail -n 1 | xargs)"
export DATA_USED_PCT="${DATA_USAGE%%%*}"
export DATA_AVAIL_KB="$(echo "$DATA_USAGE" | awk '{print $2}')"
if [[ "$DATA_AVAIL_KB" -lt 100000 ]]; then
echo -e "\n[!] Warning: Docker data volume is completely out of space! (${DATA_USED_PCT}% used on $DATA_DIR)" > /dev/stderr
echo -e " you need to free up at least 100Mb on the drive holding your data directory" > /dev/stderr
echo -e " \$ ncdu -x data\n" > /dev/stderr
df -kh "$DATA_DIR" > /dev/stderr
sleep 5
elif [[ "$DATA_USED_PCT" -ge 99 ]] || [[ "$ROOT_AVAIL_KB" -lt 500000 ]]; then
echo -e "\n[!] Warning: Docker data volume is running out of space! (${DATA_USED_PCT}% used on $DATA_DIR)" > /dev/stderr
echo -e " you may need to free up space on the drive holding your data directory soon" > /dev/stderr
echo -e " \$ ncdu -x data\n" > /dev/stderr
df -kh "$DATA_DIR" > /dev/stderr
else
# data/ has space available, but check data/archive separately, because it might be on a network mount or external drive
if [[ -d "$DATA_DIR/archive" ]]; then
export ARCHIVE_USAGE="$(df --output=pcent,avail "$DATA_DIR/archive" | tail -n 1 | xargs)"
export ARCHIVE_USED_PCT="${ARCHIVE_USAGE%%%*}"
export ARCHIVE_AVAIL_KB="$(echo "$ARCHIVE_USAGE" | awk '{print $2}')"
if [[ "$ARCHIVE_AVAIL_KB" -lt 100000 ]]; then
echo -e "\n[!] Warning: data/archive folder is completely out of space! (${ARCHIVE_USED_PCT}% used on $DATA_DIR/archive)" > /dev/stderr
echo -e " you need to free up at least 100Mb on the drive holding your data/archive directory" > /dev/stderr
echo -e " \$ ncdu -x data/archive\n" > /dev/stderr
df -kh "$DATA_DIR/archive" > /dev/stderr
sleep 5
elif [[ "$ARCHIVE_USED_PCT" -ge 99 ]] || [[ "$ROOT_AVAIL_KB" -lt 500000 ]]; then
echo -e "\n[!] Warning: data/archive folder is running out of space! (${ARCHIVE_USED_PCT}% used on $DATA_DIR/archive)" > /dev/stderr
echo -e " you may need to free up space on the drive holding your data/archive directory soon" > /dev/stderr
echo -e " \$ ncdu -x data/archive\n" > /dev/stderr
df -kh "$DATA_DIR/archive" > /dev/stderr
fi
fi
fi
# set DBUS_SYSTEM_BUS_ADDRESS & DBUS_SESSION_BUS_ADDRESS
# (dbus is not actually needed, it makes chrome log fewer warnings but isn't worth making our docker images bigger)
# service dbus start >/dev/null 2>&1 &
# export $(dbus-launch --close-stderr)
export ARCHIVEBOX_BIN_PATH="$(which archivebox)"
# Drop permissions to run commands as the archivebox user
if [[ "$1" == /* || "$1" == "bash" || "$1" == "sh" || "$1" == "echo" || "$1" == "cat" || "$1" == "whoami" || "$1" == "archivebox" ]]; then
# handle "docker run archivebox /bin/somecommand --with=some args" by passing args directly to bash -c
# e.g. "docker run archivebox archivebox init:
# "docker run archivebox /venv/bin/ipython3"
# "docker run archivebox /bin/bash -c '...'"
# "docker run archivebox cat /VERSION.txt"
exec gosu "$PUID" /bin/bash -c "exec $(printf ' %q' "$@")"
# WARNING: make sure to test extensively if you change this line, there are many edge-cases with nested quotes, special character, etc.
# printf requotes shell parameters properly https://stackoverflow.com/a/39463371/2156113
# gosu spawns an ephemeral bash process owned by archivebox user (bash wrapper is needed to load env vars, PATH, and setup terminal TTY)
# outermost exec hands over current process ID to inner bash process, inner exec hands over inner bash PID to user's command
# - https://github.com/ArchiveBox/ArchiveBox/issues/1191
else
# handle "docker run archivebox add some subcommand --with=args abc" by calling archivebox to run as args as CLI subcommand
# e.g. "docker run archivebox help"
# "docker run archivebox add --depth=1 https://example.com"
# "docker run archivebox manage createsupseruser"
# "docker run archivebox server 0.0.0.0:8000"
exec gosu "$PUID" "$ARCHIVEBOX_BIN_PATH" "$@"
fi