Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
204 lines (157 sloc) 4.87 KB
# with parts from https://github.com/concourse/docker-image-resource/blob/master/assets/common.sh
# licensed under Apache 2.0
# see https://github.com/concourse/docker-image-resource/blob/master/LICENSE
LOG_FILE=${LOG_FILE:-/tmp/docker.log}
SKIP_PRIVILEGED=${SKIP_PRIVILEGED:-false}
STARTUP_TIMEOUT=${STARTUP_TIMEOUT:-120}
sanitize_cgroups() {
mkdir -p /sys/fs/cgroup
mountpoint -q /sys/fs/cgroup || \
mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
mount -o remount,rw /sys/fs/cgroup
sed -e 1d /proc/cgroups | while read sys hierarchy num enabled; do
if [ "$enabled" != "1" ]; then
# subsystem disabled; skip
continue
fi
grouping="$(cat /proc/self/cgroup | cut -d: -f2 | grep "\\<$sys\\>")" || true
if [ -z "$grouping" ]; then
# subsystem not mounted anywhere; mount it on its own
grouping="$sys"
fi
mountpoint="/sys/fs/cgroup/$grouping"
mkdir -p "$mountpoint"
# clear out existing mount to make sure new one is read-write
if mountpoint -q "$mountpoint"; then
umount "$mountpoint"
fi
mount -n -t cgroup -o "$grouping" cgroup "$mountpoint"
if [ "$grouping" != "$sys" ]; then
if [ -L "/sys/fs/cgroup/$sys" ]; then
rm "/sys/fs/cgroup/$sys"
fi
ln -s "$mountpoint" "/sys/fs/cgroup/$sys"
fi
done
if ! test -e /sys/fs/cgroup/systemd ; then
mkdir /sys/fs/cgroup/systemd
mount -t cgroup -o none,name=systemd none /sys/fs/cgroup/systemd
fi
}
start_docker() {
mkdir -p /var/log
mkdir -p /var/run
if [ "$SKIP_PRIVILEGED" = "false" ]; then
sanitize_cgroups
# check for /proc/sys being mounted readonly, as systemd does
if grep '/proc/sys\s\+\w\+\s\+ro,' /proc/mounts >/dev/null; then
mount -o remount,rw /proc/sys
fi
fi
local mtu=$(cat /sys/class/net/$(ip route get 8.8.8.8|awk '{ print $5 }')/mtu)
local server_args="--mtu ${mtu}"
try_start() {
dockerd --data-root /scratch/docker ${server_args} >$LOG_FILE 2>&1 &
echo $! > /tmp/docker.pid
sleep 1
echo waiting for docker to come up...
until docker info >/dev/null 2>&1; do
sleep 1
if ! kill -0 "$(cat /tmp/docker.pid)" 2>/dev/null; then
return 1
fi
done
}
export server_args LOG_FILE
declare -fx try_start
trap stop_docker EXIT
if ! timeout -t ${STARTUP_TIMEOUT} bash -ce 'while true; do try_start && break; done'; then
echo Docker failed to start within ${STARTUP_TIMEOUT} seconds.
return 1
fi
}
stop_docker() {
local pid=$(cat /tmp/docker.pid)
if [ -z "$pid" ]; then
return 0
fi
kill -TERM $pid
}
log_in() {
local username="$1"
local password="$2"
local registry="$3"
if [ -n "${username}" ] && [ -n "${password}" ]; then
echo "${password}" | docker login -u "${username}" --password-stdin ${registry}
else
mkdir -p ~/.docker
echo '{"credsStore":"ecr-login"}' >> ~/.docker/config.json
fi
}
private_registry() {
local repository="${1}"
if echo "${repository}" | fgrep -q '/' ; then
local registry="$(extract_registry "${repository}")"
if echo "${registry}" | fgrep -q '.' ; then
return 0
fi
fi
return 1
}
extract_registry() {
local repository="${1}"
echo "${repository}" | cut -d/ -f1
}
extract_repository() {
local long_repository="${1}"
echo "${long_repository}" | cut -d/ -f2-
}
image_from_tag() {
docker images --no-trunc "$1" | awk "{if (\$2 == \"$2\") print \$3}"
}
image_from_digest() {
docker images --no-trunc --digests "$1" | awk "{if (\$3 == \"$2\") print \$4}"
}
certs_to_file() {
local raw_ca_certs="${1}"
local cert_count="$(echo $raw_ca_certs | jq -r '. | length')"
for i in $(seq 0 $(expr "$cert_count" - 1));
do
local cert_dir="/etc/docker/certs.d/$(echo $raw_ca_certs | jq -r .[$i].domain)"
mkdir -p "$cert_dir"
echo $raw_ca_certs | jq -r .[$i].cert >> "${cert_dir}/ca.crt"
done
}
set_client_certs() {
local raw_client_certs="${1}"
local cert_count="$(echo $raw_client_certs | jq -r '. | length')"
for i in $(seq 0 $(expr "$cert_count" - 1));
do
local cert_dir="/etc/docker/certs.d/$(echo $raw_client_certs | jq -r .[$i].domain)"
[ -d "$cert_dir" ] || mkdir -p "$cert_dir"
echo $raw_client_certs | jq -r .[$i].cert >> "${cert_dir}/client.cert"
echo $raw_client_certs | jq -r .[$i].key >> "${cert_dir}/client.key"
done
}
docker_pull() {
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m' # No Color
pull_attempt=1
max_attempts=3
while [ "$pull_attempt" -le "$max_attempts" ]; do
printf "Pulling ${GREEN}%s${NC}" "$1"
if [ "$pull_attempt" != "1" ]; then
printf " (attempt %s of %s)" "$pull_attempt" "$max_attempts"
fi
printf "...\n"
if docker pull "$1"; then
printf "\nSuccessfully pulled ${GREEN}%s${NC}.\n\n" "$1"
return 0
fi
echo
pull_attempt=$(expr "$pull_attempt" + 1)
done
printf "\n${RED}Failed to pull image %s.${NC}\n\n" "$1"
return 1
}
You can’t perform that action at this time.