woodpecker-docker-buildx/main.go

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package main
import (
"fmt"
"os"
"strings"
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"github.com/codegangsta/cli"
_ "github.com/joho/godotenv/autoload"
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)
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// build number set at compile-time
var version string
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// default docker registry
const defaultRegistry = "https://index.docker.io/v1/"
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func main() {
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app := cli.NewApp()
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app.Name = "docker plugin"
app.Usage = "docker plugin"
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app.Action = run
app.Version = version
app.Flags = []cli.Flag{
cli.BoolFlag{
Name: "dry-run",
Usage: "dry run disables docker push",
EnvVar: "PLUGIN_DRY_RUN",
},
cli.StringFlag{
Name: "commit.sha",
Usage: "git commit sha",
EnvVar: "DRONE_COMMIT_SHA",
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Value: "00000000",
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},
// daemon parameters
cli.StringFlag{
Name: "daemon.mirror",
Usage: "docker daemon registry mirror",
EnvVar: "PLUGIN_REGISTRY",
},
cli.StringFlag{
Name: "daemon.storage-driver",
Usage: "docker daemon storage driver",
EnvVar: "PLUGIN_STORAGE_DRIVER",
},
cli.StringFlag{
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Name: "daemon.storage-path",
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Usage: "docker daemon storage path",
Value: "/tmp/docker",
EnvVar: "PLUGIN_STORAGE_PATH",
},
cli.StringFlag{
Name: "daemon.bip",
Usage: "docker daemon bride ip address",
EnvVar: "PLUGIN_BIP",
},
cli.StringSliceFlag{
Name: "daemon.dns",
Usage: "docker daemon dns server",
EnvVar: "PLUGIN_DNS",
},
cli.BoolFlag{
Name: "daemon.insecure",
Usage: "docker daemon allows insecure registries",
EnvVar: "PLUGIN_INSECURE",
},
cli.BoolFlag{
Name: "daemon.debug",
Usage: "docker daemon executes in debug mode",
EnvVar: "PLUGIN_DEBUG,DOCKER_LAUNCH_DEBUG",
},
cli.BoolFlag{
Name: "daemon.off",
Usage: "docker daemon executes in debug mode",
EnvVar: "PLUGIN_DAEMON_OFF",
},
// build parameters
cli.StringFlag{
Name: "dockerfile",
Usage: "build dockerfile",
Value: "Dockerfile",
EnvVar: "PLUGIN_DOCKERFILE",
},
cli.StringFlag{
Name: "context",
Usage: "build context",
Value: ".",
EnvVar: "PLUGIN_CONTEXT",
},
cli.StringSliceFlag{
Name: "tags",
Usage: "build tags",
Value: &cli.StringSlice{"latest"},
EnvVar: "PLUGIN_TAG,PLUGIN_TAGS",
},
cli.StringSliceFlag{
Name: "args",
Usage: "build args",
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EnvVar: "PLUGIN_BUILD_ARGS",
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},
cli.StringFlag{
Name: "repo",
Usage: "docker repository",
EnvVar: "PLUGIN_REPO",
},
// secret variables
cli.StringFlag{
Name: "docker.registry",
Usage: "docker username",
Value: defaultRegistry,
EnvVar: "DOCKER_REGISTRY,PLUGIN_REGISTRY",
},
cli.StringFlag{
Name: "docker.username",
Usage: "docker username",
EnvVar: "DOCKER_USERNAME,PLUGIN_USERNAME",
},
cli.StringFlag{
Name: "docker.password",
Usage: "docker password",
EnvVar: "DOCKER_PASSWORD,PLUGIN_PASSWORD",
},
cli.StringFlag{
Name: "docker.email",
Usage: "docker email",
EnvVar: "DOCKER_EMAIL,PLUGIN_EMAIL",
},
}
app.Run(os.Args)
}
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func run(c *cli.Context) {
plugin := Plugin{
Dryrun: c.Bool("dry-run"),
Login: Login{
Registry: c.String("docker.registry"),
Username: c.String("docker.username"),
Password: c.String("docker.password"),
Email: c.String("docker.email"),
},
Build: Build{
Name: c.String("commit.sha"),
Dockerfile: c.String("dockerfile"),
Context: c.String("context"),
Tags: c.StringSlice("tags"),
Args: c.StringSlice("args"),
Repo: c.String("repo"),
},
Daemon: Daemon{
Registry: c.String("docker.registry"),
Mirror: c.String("daemon.mirror"),
StorageDriver: c.String("daemon.storage-driver"),
StoragePath: c.String("daemon.storage-path"),
Insecure: c.Bool("daemon.insecure"),
Disabled: c.Bool("daemon.off"),
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Debug: c.Bool("daemon.debug"),
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Bip: c.String("daemon.bip"),
DNS: c.StringSlice("daemon.dns"),
},
}
// this code attempts to normalize the repository name by appending the fully
// qualified registry name if otherwise omitted.
if plugin.Login.Registry != defaultRegistry &&
strings.HasPrefix(plugin.Build.Repo, defaultRegistry) {
plugin.Build.Repo = plugin.Login.Registry + "/" + plugin.Build.Repo
}
if err := plugin.Exec(); err != nil {
fmt.Println(err)
os.Exit(1)
}
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// TODO execute code remove dangling images
// this is problematic because we are running docker in scratch which does
// not have bash, so we need to hack something together
// docker images --quiet --filter=dangling=true | xargs --no-run-if-empty docker rmi
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}
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/*
cmd = exec.Command("docker", "images", "-q", "-f", "dangling=true")
cmd = exec.Command("docker", append([]string{"rmi"}, images...)...)
*/