61 lines
1.7 KiB
Bash
Executable File
61 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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if docker info >/dev/null 2>&1; then
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printf '%s\n' 'job Docker daemon is already ready'
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exit 0
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fi
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storage_size=${DOCKER_DATA_SIZE:-20G}
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storage_driver=${DOCKER_STORAGE_DRIVER:-overlay2}
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wait_seconds=${DOCKER_START_WAIT_SECONDS:-60}
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sudo install -d /var/lib/docker
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if ! mountpoint --quiet /var/lib/docker; then
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printf '%s\n' "preparing ${storage_size} loop-backed Docker storage"
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if [[ ! -e /dev/loop-control ]]; then
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sudo mknod /dev/loop-control c 10 237
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fi
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for minor in {0..7}; do
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if [[ ! -e "/dev/loop${minor}" ]]; then
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sudo mknod "/dev/loop${minor}" b 7 "$minor"
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fi
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done
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sudo truncate -s "$storage_size" /tmp/docker-data.img
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sudo mkfs.ext4 -F /tmp/docker-data.img
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loop_device=$(sudo losetup --find --show /tmp/docker-data.img)
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sudo mount "$loop_device" /var/lib/docker
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else
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printf '%s\n' 'using mounted Docker storage at /var/lib/docker'
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fi
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if [[ -f /sys/fs/cgroup/cgroup.controllers ]]; then
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sudo sh -c '
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mkdir -p /sys/fs/cgroup/init
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while read -r pid; do
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printf "%s\n" "$pid" \
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>/sys/fs/cgroup/init/cgroup.procs 2>/dev/null || true
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done </sys/fs/cgroup/cgroup.procs
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sed -e "s/ / +/g" -e "s/^/+" \
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/sys/fs/cgroup/cgroup.controllers \
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>/sys/fs/cgroup/cgroup.subtree_control
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'
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fi
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sudo sh -c 'exec nohup dockerd "$@" >/tmp/dockerd.log 2>&1' sh \
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--host=unix:///var/run/docker.sock \
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--storage-driver="$storage_driver" &
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printf '%s\n' 'waiting for job Docker daemon'
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for ((attempt = 0; attempt < wait_seconds; attempt++)); do
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if docker info >/dev/null 2>&1; then
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findmnt /var/lib/docker
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docker info --format \
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'{{json .ServerVersion}} {{json .Driver}} {{json .CgroupVersion}}'
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exit 0
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fi
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sleep 1
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done
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cat /tmp/dockerd.log
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exit 1
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