# Specify two runtimes You can specify more than one runtime in the same CodeBuild build project. This sample project uses two source files: one that uses the Go runtime and one that uses the Node.js runtime. 1. Create a directory named `my-source`. 1. Inside the `my-source` directory, create a directory named `golang-app`. 1. Create a file named `hello.go` with the following contents. Store the file in the `golang-app` directory. ``` package main import "fmt" func main() { fmt.Println("hello world from golang") fmt.Println("1+1 =", 1+1) fmt.Println("7.0/3.0 =", 7.0/3.0) fmt.Println(true && false) fmt.Println(true || false) fmt.Println(!true) fmt.Println("good bye from golang") } ``` 1. Inside the `my-source` directory, create a directory named `nodejs-app`. It should be at the same level as the `golang-app` directory. 1. Create a file named `index.js` with the following contents. Store the file in the `nodejs-app` directory. ``` console.log("hello world from nodejs"); console.log("1+1 =" + (1+1)); console.log("7.0/3.0 =" + 7.0/3.0); console.log(true && false); console.log(true || false); console.log(!true); console.log("good bye from nodejs"); ``` 1. Create a file named `package.json` with the following contents. Store the file in the `nodejs-app` directory. ``` { "name": "mycompany-app", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"run some tests here\"" }, "author": "", "license": "ISC" } ``` 1. Create a file named `buildspec.yml` with the following contents. Store the file in the `my-source` directory, at the same level as the `nodejs-app` and `golang-app` directories. The `runtime-versions` section specifies the Node.js version 12 and Go version 1.13 runtimes. ``` version: 0.2 phases: install: runtime-versions: golang: 1.13 nodejs: 12 build: commands: - echo Building the Go code... - cd $CODEBUILD_SRC_DIR/golang-app - go build hello.go - echo Building the Node code... - cd $CODEBUILD_SRC_DIR/nodejs-app - npm run test artifacts: secondary-artifacts: golang_artifacts: base-directory: golang-app files: - hello nodejs_artifacts: base-directory: nodejs-app files: - index.js - package.json ``` 1. Your file structure should now look like this. ``` my-source ├── golang-app │ └── hello.go ├── nodejs.app │ ├── index.js │ └── package.json └── buildspec.yml ``` 1. Upload the contents of the `my-source` directory to an S3 input bucket or a CodeCommit, GitHub, or Bitbucket repository. **Important** If you are using an S3 input bucket, be sure to create a ZIP file that contains the directory structure and files, and then upload it to the input bucket. Do not add `my-source` to the ZIP file, just the directories and files in `my-source`. 1. Open the AWS CodeBuild console at [https://console.aws.amazon.com/codesuite/codebuild/home](https://console.aws.amazon.com/codesuite/codebuild/home). 1. Create a build project. For more information, see [Create a build project (console)](create-project.md#create-project-console) and [Run a build (console)](run-build-console.md). Leave all settings at their default values, except for these settings. + For **Environment**: + For **Environment image**, choose **Managed image**. + For **Operating system**, choose **Amazon Linux 2**. + For **Runtime(s)**, choose **Standard**. + For **Image**, choose **aws/codebuild/amazonlinux-x86\$164-standard:4.0**. 1. Choose **Create build project**. 1. Choose **Start build**. 1. On **Build configuration**, accept the defaults, and then choose **Start build**. 1. After the build is complete, view the build output on the **Build logs** tab. You should see output similar to the following. It shows output from the Go and Node.js runtimes. It also shows output from the Go and Node.js applications. ``` [Container] Date Time Processing environment variables [Container] Date Time Selecting 'golang' runtime version '1.13' based on manual selections... [Container] Date Time Selecting 'nodejs' runtime version '12' based on manual selections... [Container] Date Time Running command echo "Installing Go version 1.13 ..." Installing Go version 1.13 ... [Container] Date Time Running command echo "Installing Node.js version 12 ..." Installing Node.js version 12 ... [Container] Date Time Running command n $NODE_12_VERSION installed : v12.20.1 (with npm 6.14.10) [Container] Date Time Moving to directory /codebuild/output/src819694850/src [Container] Date Time Registering with agent [Container] Date Time Phases found in YAML: 2 [Container] Date Time INSTALL: 0 commands [Container] Date Time BUILD: 1 commands [Container] Date Time Phase complete: DOWNLOAD_SOURCE State: SUCCEEDED [Container] Date Time Phase context status code: Message: [Container] Date Time Entering phase INSTALL [Container] Date Time Phase complete: INSTALL State: SUCCEEDED [Container] Date Time Phase context status code: Message: [Container] Date Time Entering phase PRE_BUILD [Container] Date Time Phase complete: PRE_BUILD State: SUCCEEDED [Container] Date Time Phase context status code: Message: [Container] Date Time Entering phase BUILD [Container] Date Time Running command echo Building the Go code... Building the Go code... [Container] Date Time Running command cd $CODEBUILD_SRC_DIR/golang-app [Container] Date Time Running command go build hello.go [Container] Date Time Running command echo Building the Node code... Building the Node code... [Container] Date Time Running command cd $CODEBUILD_SRC_DIR/nodejs-app [Container] Date Time Running command npm run test > mycompany-app@1.0.0 test /codebuild/output/src924084119/src/nodejs-app > echo "run some tests here" run some tests here ```