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moby--moby/cmd/dockerd/docker.go
Tibor Vass 195919d9d6 builder: set buildkit's exported product variable via PRODUCT
This introduces a PRODUCT environment variable that is used to set a constant
at dockerversion.ProductName.

That is then used to set BuildKit's ExportedProduct variable in order to show
useful error messages to users when a certain version of the product doesn't
support a BuildKit feature.

Signed-off-by: Tibor Vass <tibor@docker.com>
2018-07-16 21:41:54 +00:00

74 lines
1.8 KiB
Go

package main
import (
"fmt"
"os"
"runtime"
"github.com/docker/docker/cli"
"github.com/docker/docker/daemon/config"
"github.com/docker/docker/dockerversion"
"github.com/docker/docker/pkg/reexec"
"github.com/docker/docker/pkg/term"
"github.com/moby/buildkit/util/apicaps"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
func newDaemonCommand() *cobra.Command {
opts := newDaemonOptions(config.New())
cmd := &cobra.Command{
Use: "dockerd [OPTIONS]",
Short: "A self-sufficient runtime for containers.",
SilenceUsage: true,
SilenceErrors: true,
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
opts.flags = cmd.Flags()
return runDaemon(opts)
},
DisableFlagsInUseLine: true,
Version: fmt.Sprintf("%s, build %s", dockerversion.Version, dockerversion.GitCommit),
}
cli.SetupRootCommand(cmd)
flags := cmd.Flags()
flags.BoolP("version", "v", false, "Print version information and quit")
flags.StringVar(&opts.configFile, "config-file", defaultDaemonConfigFile, "Daemon configuration file")
opts.InstallFlags(flags)
installConfigFlags(opts.daemonConfig, flags)
installServiceFlags(flags)
return cmd
}
func init() {
if dockerversion.ProductName != "" {
apicaps.ExportedProduct = dockerversion.ProductName
}
}
func main() {
if reexec.Init() {
return
}
// Set terminal emulation based on platform as required.
_, stdout, stderr := term.StdStreams()
// @jhowardmsft - maybe there is a historic reason why on non-Windows, stderr is used
// here. However, on Windows it makes no sense and there is no need.
if runtime.GOOS == "windows" {
logrus.SetOutput(stdout)
} else {
logrus.SetOutput(stderr)
}
cmd := newDaemonCommand()
cmd.SetOutput(stdout)
if err := cmd.Execute(); err != nil {
fmt.Fprintf(stderr, "%s\n", err)
os.Exit(1)
}
}