Merge pull request #269 from Koma-Andrea/master [ci skip]

Added docker configuration

cmd/drone-docker/main.go

@@ -208,6 +208,11 @@ func main() {
 			Usage:  "docker email",
 			EnvVar: "PLUGIN_EMAIL,DOCKER_EMAIL",
 		},
+		cli.StringFlag{
+			Name:   "docker.config",
+			Usage:  "docker json dockerconfig content",
+			EnvVar: "PLUGIN_CONFIG",
+		},
 		cli.BoolTFlag{
 			Name:   "docker.purge",
 			Usage:  "docker should cleanup images",
@@ -244,6 +249,7 @@ func run(c *cli.Context) error {
 			Username:   c.String("docker.username"),
 			Password:   c.String("docker.password"),
 			Email:      c.String("docker.email"),
+			DockerConfig: c.String("docker.config"),
 		},
 		Build: docker.Build{
 			Remote:      c.String("remote.url"),

daemon.go

@@ -9,6 +9,7 @@ import (
 
 const dockerExe = "/usr/local/bin/docker"
 const dockerdExe = "/usr/local/bin/dockerd"
+const dockerrootconfdir = "/root/.docker/"
 
 func (p Plugin) startDaemon() {
 	cmd := commandDaemon(p.Daemon)

daemon_win.go

@@ -4,6 +4,7 @@ package docker
 
 const dockerExe = "C:\\bin\\docker.exe"
 const dockerdExe = ""
+const dockerrootconfdir = "C:\\ProgramData\\docker\"
 
 func (p Plugin) startDaemon() {
 	// this is a no-op on windows

docker.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 	"strings"
 	"time"
+	"io/ioutil"
 )
 
 type (
@@ -32,6 +33,7 @@ type (
 		Username   string // Docker registry username
 		Password   string // Docker registry password
 		Email      string // Docker registry email
+		DockerConfig string // Docker Auth Config
 	}
 
 	// Build defines Docker build parameters.
@@ -83,6 +85,22 @@ func (p Plugin) Exec() error {
 		time.Sleep(time.Second * 1)
 	}
 
+	// Create Auth Config File
+	if p.Login.DockerConfig != "" {
+		fmt.Println("DockerConfig provided.")
+		err_mkdir := os.MkdirAll(dockerrootconfdir, 0600)
+		if err_mkdir != nil {
+			fmt.Println("Error creating root's docker auth config directory: ")
+			fmt.Println(err_mkdir)
+		}
+		conffile := fmt.Sprintf("%s%s", dockerrootconfdir, "config.json")
+		err_mkconf := ioutil.WriteFile(conffile, []byte(p.Login.DockerConfig), 0600)
+		if err_mkconf != nil {
+			fmt.Println("Error creating root's docker auth configuration: ")
+			fmt.Println(err_mkconf)
+		}
+	}
+
 	// login to the Docker registry
 	if p.Login.Password != "" {
 		cmd := commandLogin(p.Login)
@@ -90,8 +108,10 @@ func (p Plugin) Exec() error {
 		if err != nil {
 			return fmt.Errorf("Error authenticating: %s", err)
 		}
-	} else {
-		fmt.Println("Registry credentials not provided. Guest mode enabled.")
+	} 
+
+	if p.Login.Password != "" && p.Login.DockerConfig != "" {
+		fmt.Println("Registry credentials or Docker config not provided. Guest mode enabled.")
 	}
 	
 	if p.Build.Squash && !p.Daemon.Experimental {