initial working version of plugin

main.go

@@ -0,0 +1,103 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/drone/drone-plugin-go/plugin"
+)
+
+type Docker struct {
+	Registry string `json:"registry"`
+	Username string `json:"username"`
+	Password string `json:"password"`
+	Email    string `json:"email"`
+	Repo     string `json:"repo"`
+	Tag      string `json:"tag"`
+	File     string `json:"file"`
+}
+
+func main() {
+	clone := plugin.Clone{}
+	vargs := Docker{}
+
+	plugin.Param("clone", &clone)
+	plugin.Param("vargs", &vargs)
+	if err := plugin.Parse(); err != nil {
+		println(err.Error())
+		os.Exit(1)
+	}
+
+	// Starts the Docker daemon
+	go func() {
+		cmd := exec.Command("docker", "-d")
+		cmd.Dir = clone.Dir
+		cmd.Stdout = ioutil.Discard
+		cmd.Stderr = ioutil.Discard
+		cmd.Run()
+	}()
+
+	// Sleep for a few seconds
+	time.Sleep(5 * time.Second)
+
+	// Set the Registry value
+	if len(vargs.Registry) == 0 {
+		vargs.Registry = "https://index.docker.io/v1/"
+	}
+	// Set the Dockerfile path
+	if len(vargs.File) == 0 {
+		vargs.File = "."
+	}
+	// Set the Tag value
+	switch vargs.Tag {
+	case "$DRONE_BRANCH":
+		vargs.Tag = clone.Branch
+	case "$DRONE_COMMIT":
+		vargs.Tag = clone.Sha
+	case "":
+		vargs.Tag = "latest"
+	}
+	vargs.Repo = fmt.Sprintf("%s:%s", vargs.Repo, vargs.Tag)
+
+	// Build the container
+	cmd := exec.Command("docker", "build", "--pull=true", "--rm=true", "-t", vargs.Repo, vargs.File)
+	cmd.Dir = clone.Dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	trace(cmd)
+	err := cmd.Run()
+	if err != nil {
+		os.Exit(1)
+	}
+
+	// Login to Docker
+	cmd = exec.Command("docker", "login", "-u", vargs.Username, "-p", vargs.Password, "-e", vargs.Email, "index.docker.io")
+	cmd.Dir = clone.Dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	err = cmd.Run()
+	if err != nil {
+		os.Exit(1)
+	}
+
+	// Push the container
+	cmd = exec.Command("docker", "push", vargs.Repo)
+	cmd.Dir = clone.Dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	trace(cmd)
+	err = cmd.Run()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+// Trace writes each command to standard error (preceded by a ‘$ ’) before it
+// is executed. Used for debugging your build.
+func trace(cmd *exec.Cmd) {
+	fmt.Println("$", strings.Join(cmd.Args, " "))
+}