// ENTRYPOINT /usr/sbin/nginx
//
// Set the entrypoint (which defaults to sh -c on linux, or cmd /S /C on Windows) to
// /usr/sbin/nginx. Will accept the CMD as the arguments to /usr/sbin/nginx.
//
// Handles command processing similar to CMD and RUN, only b.Config.Entrypoint
// is initialized at NewBuilder time instead of through argument parsing.
//
func entrypoint(b *builder, args []string, attributes map[string]bool, original string) error {
if err := b.BuilderFlags.Parse(); err != nil {
return err
}
parsed := handleJSONArgs(args, attributes)
switch {
case attributes["json"]:
// ENTRYPOINT ["echo", "hi"]
b.Config.Entrypoint = runconfig.NewEntrypoint(parsed...)
case len(parsed) == 0:
// ENTRYPOINT []
b.Config.Entrypoint = nil
default:
// ENTRYPOINT echo hi
if runtime.GOOS != "windows" {
b.Config.Entrypoint = runconfig.NewEntrypoint("/bin/sh", "-c", parsed[0])
} else {
b.Config.Entrypoint = runconfig.NewEntrypoint("cmd", "/S /C", parsed[0])
}
}
// when setting the entrypoint if a CMD was not explicitly set then
// set the command to nil
if !b.cmdSet {
b.Config.Cmd = nil
}
if err := b.commit("", b.Config.Cmd, fmt.Sprintf("ENTRYPOINT %q", b.Config.Entrypoint)); err != nil {
return err
}
return nil
}
func (d *Daemon) ContainerExecCreate(job *engine.Job) error {
if len(job.Args) != 1 {
return fmt.Errorf("Usage: %s [options] container command [args]", job.Name)
}
if strings.HasPrefix(d.execDriver.Name(), lxc.DriverName) {
return lxc.ErrExec
}
var name = job.Args[0]
container, err := d.getActiveContainer(name)
if err != nil {
return err
}
config, err := runconfig.ExecConfigFromJob(job)
if err != nil {
return err
}
cmd := runconfig.NewCommand(config.Cmd...)
entrypoint, args := d.getEntrypointAndArgs(runconfig.NewEntrypoint(), cmd)
processConfig := execdriver.ProcessConfig{
Tty: config.Tty,
Entrypoint: entrypoint,
Arguments: args,
User: config.User,
Privileged: config.Privileged,
}
execConfig := &execConfig{
ID: stringid.GenerateRandomID(),
OpenStdin: config.AttachStdin,
OpenStdout: config.AttachStdout,
OpenStderr: config.AttachStderr,
StreamConfig: StreamConfig{},
ProcessConfig: processConfig,
Container: container,
Running: false,
}
container.LogEvent("exec_create: " + execConfig.ProcessConfig.Entrypoint + " " + strings.Join(execConfig.ProcessConfig.Arguments, " "))
d.registerExecCommand(execConfig)
job.Printf("%s\n", execConfig.ID)
return nil
}
func (d *Daemon) ContainerExecCreate(config *runconfig.ExecConfig) (string, error) {
// Not all drivers support Exec (LXC for example)
if err := checkExecSupport(d.execDriver.Name()); err != nil {
return "", err
}
container, err := d.getActiveContainer(config.Container)
if err != nil {
return "", err
}
cmd := runconfig.NewCommand(config.Cmd...)
entrypoint, args := d.getEntrypointAndArgs(runconfig.NewEntrypoint(), cmd)
user := config.User
if len(user) == 0 {
user = container.Config.User
}
processConfig := &execdriver.ProcessConfig{
Tty: config.Tty,
Entrypoint: entrypoint,
Arguments: args,
User: user,
Privileged: config.Privileged,
}
execConfig := &execConfig{
ID: stringid.GenerateNonCryptoID(),
OpenStdin: config.AttachStdin,
OpenStdout: config.AttachStdout,
OpenStderr: config.AttachStderr,
StreamConfig: StreamConfig{},
ProcessConfig: processConfig,
Container: container,
Running: false,
waitStart: make(chan struct{}),
}
d.registerExecCommand(execConfig)
container.LogEvent("exec_create: " + execConfig.ProcessConfig.Entrypoint + " " + strings.Join(execConfig.ProcessConfig.Arguments, " "))
return execConfig.ID, nil
}
func (d *Daemon) ContainerExecCreate(config *runconfig.ExecConfig) (string, error) {
if strings.HasPrefix(d.execDriver.Name(), lxc.DriverName) {
return "", lxc.ErrExec
}
container, err := d.getActiveContainer(config.Container)
if err != nil {
return "", err
}
cmd := runconfig.NewCommand(config.Cmd...)
entrypoint, args := d.getEntrypointAndArgs(runconfig.NewEntrypoint(), cmd)
processConfig := execdriver.ProcessConfig{
Tty: config.Tty,
Entrypoint: entrypoint,
Arguments: args,
User: config.User,
Privileged: config.Privileged,
}
execConfig := &execConfig{
ID: stringid.GenerateRandomID(),
OpenStdin: config.AttachStdin,
OpenStdout: config.AttachStdout,
OpenStderr: config.AttachStderr,
StreamConfig: StreamConfig{},
ProcessConfig: processConfig,
Container: container,
Running: false,
}
container.LogEvent("exec_create: " + execConfig.ProcessConfig.Entrypoint + " " + strings.Join(execConfig.ProcessConfig.Arguments, " "))
d.registerExecCommand(execConfig)
return execConfig.ID, nil
}
func Convert(c *project.ServiceConfig) (*runconfig.Config, *runconfig.HostConfig, error) {
vs := Filter(c.Volumes, isVolume)
volumes := make(map[string]struct{}, len(vs))
for _, v := range vs {
volumes[v] = struct{}{}
}
cmd, _ := shlex.Split(c.Command)
entrypoint, _ := shlex.Split(c.Entrypoint)
ports, binding, err := nat.ParsePortSpecs(c.Ports)
if err != nil {
return nil, nil, err
}
restart, err := runconfig.ParseRestartPolicy(c.Restart)
if err != nil {
return nil, nil, err
}
dns := c.Dns.Slice()
dnssearch := c.DnsSearch.Slice()
labels := c.Labels.MapParts()
if len(c.Expose) > 0 {
exposedPorts, _, err := nat.ParsePortSpecs(c.Expose)
ports = exposedPorts
if err != nil {
return nil, nil, err
}
}
config := &runconfig.Config{
Entrypoint: runconfig.NewEntrypoint(entrypoint...),
Hostname: c.Hostname,
Domainname: c.DomainName,
User: c.User,
Env: c.Environment.Slice(),
Cmd: runconfig.NewCommand(cmd...),
Image: c.Image,
Labels: labels,
ExposedPorts: ports,
Tty: c.Tty,
OpenStdin: c.StdinOpen,
WorkingDir: c.WorkingDir,
Volumes: volumes,
}
host_config := &runconfig.HostConfig{
VolumesFrom: c.VolumesFrom,
CapAdd: c.CapAdd,
CapDrop: c.CapDrop,
CpuShares: c.CpuShares,
Privileged: c.Privileged,
Binds: Filter(c.Volumes, isBind),
Dns: dns,
DnsSearch: dnssearch,
LogConfig: runconfig.LogConfig{
Type: c.LogDriver,
},
Memory: c.MemLimit,
NetworkMode: runconfig.NetworkMode(c.Net),
ReadonlyRootfs: c.ReadOnly,
PidMode: runconfig.PidMode(c.Pid),
IpcMode: runconfig.IpcMode(c.Ipc),
PortBindings: binding,
RestartPolicy: restart,
}
return config, host_config, nil
}
func Convert(c *project.ServiceConfig) (*runconfig.Config, *runconfig.HostConfig, error) {
vs := Filter(c.Volumes, isVolume)
volumes := make(map[string]struct{}, len(vs))
for _, v := range vs {
volumes[v] = struct{}{}
}
ports, binding, err := nat.ParsePortSpecs(c.Ports)
if err != nil {
return nil, nil, err
}
restart, err := runconfig.ParseRestartPolicy(c.Restart)
if err != nil {
return nil, nil, err
}
if exposedPorts, _, err := nat.ParsePortSpecs(c.Expose); err != nil {
return nil, nil, err
} else {
for k, v := range exposedPorts {
ports[k] = v
}
}
deviceMappings, err := parseDevices(c.Devices)
if err != nil {
return nil, nil, err
}
config := &runconfig.Config{
Entrypoint: runconfig.NewEntrypoint(c.Entrypoint.Slice()...),
Hostname: c.Hostname,
Domainname: c.DomainName,
User: c.User,
Env: c.Environment.Slice(),
Cmd: runconfig.NewCommand(c.Command.Slice()...),
Image: c.Image,
Labels: c.Labels.MapParts(),
ExposedPorts: ports,
Tty: c.Tty,
OpenStdin: c.StdinOpen,
WorkingDir: c.WorkingDir,
VolumeDriver: c.VolumeDriver,
Volumes: volumes,
}
host_config := &runconfig.HostConfig{
VolumesFrom: c.VolumesFrom,
CapAdd: runconfig.NewCapList(c.CapAdd),
CapDrop: runconfig.NewCapList(c.CapDrop),
CpuShares: c.CpuShares,
CpusetCpus: c.CpuSet,
ExtraHosts: c.ExtraHosts,
Privileged: c.Privileged,
Binds: Filter(c.Volumes, isBind),
Devices: deviceMappings,
Dns: c.Dns.Slice(),
DnsSearch: c.DnsSearch.Slice(),
LogConfig: runconfig.LogConfig{
Type: c.LogDriver,
Config: c.LogOpt,
},
Memory: c.MemLimit,
MemorySwap: c.MemSwapLimit,
NetworkMode: runconfig.NetworkMode(c.Net),
ReadonlyRootfs: c.ReadOnly,
PidMode: runconfig.PidMode(c.Pid),
UTSMode: runconfig.UTSMode(c.Uts),
IpcMode: runconfig.IpcMode(c.Ipc),
PortBindings: binding,
RestartPolicy: restart,
SecurityOpt: c.SecurityOpt,
}
return config, host_config, nil
}
