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mirror of https://github.com/thegeeklab/wp-docker-buildx.git synced 2024-11-09 17:20:39 +00:00

stop docker service before exit

This commit is contained in:
Brad Rydzewski 2015-05-14 23:20:26 -07:00
parent 67806aa90a
commit 8932dda6d9
4 changed files with 115 additions and 3 deletions

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@ -1,6 +1,7 @@
Use the Docker plugin to build and push Docker images to a registry.
The following parameters are used to configuration this plugin:
* **registry** - authenticates to this registry
* **username** - authenticates with this username
* **password** - authenticates with this password
* **email** - authenticates with this email

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@ -5,10 +5,16 @@
FROM ubuntu:14.04
RUN apt-get update -qq \
&& apt-get -y install curl \
&& apt-get -y install curl \
apt-transport-https \
ca-certificates \
curl \
lxc \
iptables \
&& curl -sSL https://get.docker.com/ubuntu/ | sh \
&& rm -rf /var/lib/apt/lists/*
ADD drone-docker /go/bin/
ADD wrapdocker /bin/
ENTRYPOINT ["/go/bin/drone-docker"]

21
main.go
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@ -32,13 +32,27 @@ func main() {
os.Exit(1)
}
stop := func() {
cmd := exec.Command("start-stop-daemon", "--stop", "--pidfile", "/var/run/docker.pid")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd)
cmd.Run()
}
defer stop()
// Starts the Docker daemon
go func() {
cmd := exec.Command("docker", "-d")
cmd.Dir = clone.Dir
cmd := exec.Command("/bin/bash", "/bin/wrapdocker")
cmd.Stdout = ioutil.Discard
cmd.Stderr = ioutil.Discard
cmd.Run()
cmd = exec.Command("docker", "-d", "-s", "overlay")
cmd.Stdout = ioutil.Discard
cmd.Stderr = ioutil.Discard
trace(cmd)
cmd.Run()
}()
// Sleep for a few seconds
@ -71,6 +85,7 @@ func main() {
trace(cmd)
err := cmd.Run()
if err != nil {
stop()
os.Exit(1)
}
@ -81,6 +96,7 @@ func main() {
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
stop()
os.Exit(1)
}
@ -92,6 +108,7 @@ func main() {
trace(cmd)
err = cmd.Run()
if err != nil {
stop()
os.Exit(1)
}
}

88
wrapdocker Normal file
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@ -0,0 +1,88 @@
#!/bin/bash
# Ensure that all nodes in /dev/mapper correspond to mapped devices currently loaded by the device-mapper kernel driver
dmsetup mknodes
# First, make sure that cgroups are mounted correctly.
CGROUP=/sys/fs/cgroup
: {LOG:=stdio}
[ -d $CGROUP ] ||
mkdir $CGROUP
mountpoint -q $CGROUP ||
mount -n -t tmpfs -o uid=0,gid=0,mode=0755 cgroup $CGROUP || {
echo "Could not make a tmpfs mount. Did you use --privileged?"
exit 1
}
if [ -d /sys/kernel/security ] && ! mountpoint -q /sys/kernel/security
then
mount -t securityfs none /sys/kernel/security || {
echo "Could not mount /sys/kernel/security."
echo "AppArmor detection and --privileged mode might break."
}
fi
# Mount the cgroup hierarchies exactly as they are in the parent system.
for SUBSYS in $(cut -d: -f2 /proc/1/cgroup)
do
[ -d $CGROUP/$SUBSYS ] || mkdir $CGROUP/$SUBSYS
mountpoint -q $CGROUP/$SUBSYS ||
mount -n -t cgroup -o $SUBSYS cgroup $CGROUP/$SUBSYS
# The two following sections address a bug which manifests itself
# by a cryptic "lxc-start: no ns_cgroup option specified" when
# trying to start containers withina container.
# The bug seems to appear when the cgroup hierarchies are not
# mounted on the exact same directories in the host, and in the
# container.
# Named, control-less cgroups are mounted with "-o name=foo"
# (and appear as such under /proc/<pid>/cgroup) but are usually
# mounted on a directory named "foo" (without the "name=" prefix).
# Systemd and OpenRC (and possibly others) both create such a
# cgroup. To avoid the aforementioned bug, we symlink "foo" to
# "name=foo". This shouldn't have any adverse effect.
echo $SUBSYS | grep -q ^name= && {
NAME=$(echo $SUBSYS | sed s/^name=//)
ln -s $SUBSYS $CGROUP/$NAME
}
# Likewise, on at least one system, it has been reported that
# systemd would mount the CPU and CPU accounting controllers
# (respectively "cpu" and "cpuacct") with "-o cpuacct,cpu"
# but on a directory called "cpu,cpuacct" (note the inversion
# in the order of the groups). This tries to work around it.
[ $SUBSYS = cpuacct,cpu ] && ln -s $SUBSYS $CGROUP/cpu,cpuacct
done
# Note: as I write those lines, the LXC userland tools cannot setup
# a "sub-container" properly if the "devices" cgroup is not in its
# own hierarchy. Let's detect this and issue a warning.
grep -q :devices: /proc/1/cgroup ||
echo "WARNING: the 'devices' cgroup should be in its own hierarchy."
grep -qw devices /proc/1/cgroup ||
echo "WARNING: it looks like the 'devices' cgroup is not mounted."
# Now, close extraneous file descriptors.
pushd /proc/self/fd >/dev/null
for FD in *
do
case "$FD" in
# Keep stdin/stdout/stderr
[012])
;;
# Nuke everything else
*)
eval exec "$FD>&-"
;;
esac
done
popd >/dev/null
# If a pidfile is still around (for example after a container restart),
# delete it so that docker can start.
rm -rf /var/run/docker.pid