implementing build image action

src/tasks/dockerRun/dockerBuild.ts

@@ -1,12 +1,34 @@
 /// <reference path="../../../typings/vsts-task-lib/vsts-task-lib.d.ts" />
 
+import fs = require("fs");
+import path = require("path");
 import tl = require("vsts-task-lib/task");
 import * as docker from "./dockerCommand";
 
 export function dockerBuild(): void {
     var dockerFile = tl.getInput("dockerFile", true);
+    var context = tl.getInput("context", true);
     var imageName = tl.getInput("imageName", true);
     var additionalArgs = tl.getInput("additionalArgs", false);
-    
-    
+
+    dockerFile = copyDockerFileToContextFolder(dockerFile, context);
+
+    var cmd = new docker.DockerCommand("build");
+    cmd.dockerFile = dockerFile;
+    cmd.context = context;
+    cmd.imageName = imageName;
+    cmd.additionalArguments = additionalArgs;
+    cmd.execSync();
+}
+
+function copyDockerFileToContextFolder(dockerFile: string, context: string): string {
+    var target = path.join(context, path.basename(dockerFile));
+
+    if (dockerFile == target) {
+        return target;
+    }
+
+    fs.createReadStream(dockerFile).pipe(<any>fs.createWriteStream(target));
+    return target;
+    // TODO: handle errors
 }

src/tasks/dockerRun/dockerCommand.ts

@@ -5,6 +5,8 @@ import tr = require("vsts-task-lib/toolrunner");
 
 export class DockerCommand {
     public commandName: string;
+    public dockerFile: string;
+    public context: string;
     public imageName: string;
     public additionalArguments: string;
 
@@ -19,8 +21,11 @@ export class DockerCommand {
             case "run":
                 this.appendRunCmdArgs(command);
                 break;
+            case "build":
+                this.appendBuildCmdArgs(command);
+                break;
             default:
-                command.arg(this.imageName);
+                command.arg(this.commandName);
         }
 
         if (this.additionalArguments) {
@@ -45,4 +50,11 @@ export class DockerCommand {
         command.arg(this.imageName);
         // TODO: hanle imageName not set
     }
+
+    private appendBuildCmdArgs(command: tr.ToolRunner) {
+        command.arg("build");
+        command.arg("-t " + this.imageName);
+        command.arg("-f " + this.dockerFile);
+        command.arg(this.context);
+    }
 }

src/tasks/dockerRun/task.json

@@ -32,12 +32,21 @@
         },
         {
             "name": "dockerFile",
-            "type": "",
+            "type": "filePath",
             "label": "Docker File",
             "defaultValue": "",
             "required": true,
             "visibleRule": "action = build an image",
-            "helpMarkDown": "docker file to be built"
+            "helpMarkDown": "Path to Dockerfile to use"
+        },
+        {
+            "name": "context",
+            "type": "filePath",
+            "label": "Context",
+            "defaultValue": "$(Build.StagingDirectory)/drop",
+            "required": true,
+            "visibleRule": "action = build an image",
+            "helpMarkDown": "The path to the folder to build from."
         },
         {
             "name": "imageName",