.projen-helper.js

const { JsonPatch } = require("projen");

const awsConfigureStep = {
  uses: "aws-actions/configure-aws-credentials@v1-node16",
  with: {
    "aws-access-key-id": "${{ secrets.AWS_ACCESS_KEY_ID }}",
    "aws-secret-access-key": "${{ secrets.AWS_SECRET_ACCESS_KEY }}",
    "aws-region": "${{ secrets.CDK_DEPLOY_REGION }}",
  },
};

const preDestroyJobs = {
  runsOn: "ubuntu-latest",
  permissions: { contents: "write" },
  if: "github.event.ref_type == 'branch'",
  env: { GIT_DEL_BRANCH: "${{ github.event.ref }}" },
  steps: [
    {
      uses: "actions/checkout@v3",
      with: {
        ref: "${{ github.event.pull_request.head.ref }}",
        repository: "${{ github.event.pull_request.head.repo.full_name }}",
      },
    },
    {
      uses: "actions/setup-node@v3",
      with: {
        "node-version": "16.18.1",
      },
    },
    {
      run: "yarn install --check-files",
    },
    {
      uses: "aws-actions/configure-aws-credentials@v1-node16",
      with: {
        "aws-access-key-id": "${{ secrets.AWS_ACCESS_KEY_ID }}",
        "aws-secret-access-key": "${{ secrets.AWS_SECRET_ACCESS_KEY }}",
        "aws-region": "${{ secrets.CDK_DEPLOY_REGION }}",
      },
    },
    {
      run: "npx projen default",
    },
    awsConfigureStep,
    { id: "cdk-destroy", run: "npx cdk destroy --require-approval never --force >> $GITHUB_STEP_SUMMARY" },
  ],
};

const cdkDeployCmd = { id: "cdk-deploy", run: "npx cdk deploy --require-approval never --force >> $GITHUB_STEP_SUMMARY" };

const patches = {
  build: [
    JsonPatch.add("/jobs/build/steps/3", awsConfigureStep),
    JsonPatch.add("/jobs/build/steps/-", cdkDeployCmd)
  ],
  release: [
    JsonPatch.add("/jobs/release/steps/3", awsConfigureStep),
    JsonPatch.add("/jobs/release/steps/-", cdkDeployCmd)
  ]
};

module.exports = { preDestroyJobs, patches };

.projen.rc

const { awscdk } = require("projen");
const { preDestroyJobs, patches } = require("./.projen-helper.js");

const project = new awscdk.AwsCdkTypeScriptApp({
  author: "cfuerst",
  authorAddress: "c.fuerst@gmail.com",
  authorName: "Christian Fürst",
  authorOrganization: true,
  copyrightOwner: "Christian Fürst",
  cdkVersion: "2.5.0",
  defaultReleaseBranch: "main",
  name: "@cloudy-with-a-chance-of-meatballs/cdk-app-example-rest-api-rad-typescript",
  repositoryUrl: "https://github.com/cloudy-with-a-chance-of-meatballs/cdk-app-example-rest-api-rad-typescript",
  license: "MIT",
  minNodeVersion: "16.18.1",
  gitignore: [".idea/"],
  deps: [
    "aws-cdk-lib",
    "constructs",
    "@cloudy-with-a-chance-of-meatballs/cdk-lambda-token-authorizer-jwt@^v0.0.41",
    "@pepperize/cdk-apigateway-swagger-ui@^0.0.160",
  ],
  description: "cdk sample application for a blueprint of a RAD (rapid application development) production ready rest api.",
  eslint: true,
  prettier: true,
  prettierOptions: {
    settings: { printWidth: 160 },
  },
  release: true,
  releaseEveryCommit: true,
  githubOptions: {
    pullRequestLint: false,
  },
});

//add a workflow for cdk destroy
const destroyWorkflow = project.github.addWorkflow("destroy");
destroyWorkflow.on({ delete: {}, workflowDispatch: {} });
destroyWorkflow.addJob("cdk-destroy", preDestroyJobs);

//add aws cli secret setup and deploy steps
["build", "release"].forEach((v) => {
  project.github.tryFindWorkflow(v).file.patch(patches[v][0]);
  project.github.tryFindWorkflow(v).file.patch(patches[v][1]);
});

// synthesize the project files
project.synth();

Hi @cfuerst ,

To add the deploy job, I would be doing something like below:

const { awscdk } = require("projen");
const { preDestroyJobs, patches } = require("./.projen-helper.js");

const project = new awscdk.AwsCdkTypeScriptApp({
  author: "cfuerst",
  authorAddress: "c.fuerst@gmail.com",
  authorName: "Christian Fürst",
  authorOrganization: true,
  copyrightOwner: "Christian Fürst",
  cdkVersion: "2.5.0",
  defaultReleaseBranch: "main",
  name: "@cloudy-with-a-chance-of-meatballs/cdk-app-example-rest-api-rad-typescript",
  repositoryUrl: "https://github.com/cloudy-with-a-chance-of-meatballs/cdk-app-example-rest-api-rad-typescript",
  license: "MIT",
  minNodeVersion: "16.18.1",
  gitignore: [".idea/"],
  deps: [
    "aws-cdk-lib",
    "constructs",
    "@cloudy-with-a-chance-of-meatballs/cdk-lambda-token-authorizer-jwt@^v0.0.41",
    "@pepperize/cdk-apigateway-swagger-ui@^0.0.160",
  ],
  codeArtifactOptions: {
    accessKeyIdSecret: 'AWS_ACCESS_KEY_ID',
    secretAccessKeySecret: 'AWS_SECRET_ACCESS_KEY',
  }
  deployOptions: {
    npmConfigEnvironment: 'stack',  //optional
    environments: [{
      name: 'amin1',
      awsCredentials: {
        region: 'ap-southeast-2',
      },
    },
    {
      name: 'amin2',
      awsCredentials: {
        region: 'ap-southeast-2',
        roleToAssume: 'arn:aws:iam::123456789012:role/amin-test-build-role',
      },
    }],
  },
  description: "cdk sample application for a blueprint of a RAD (rapid application development) production ready rest api.",
  eslint: true,
  prettier: true,
  prettierOptions: {
    settings: { printWidth: 160 },
  },
  release: true,
  releaseEveryCommit: true,
  githubOptions: {
    pullRequestLint: false,
  },
});

//add a workflow for cdk destroy
const destroyWorkflow = project.github.addWorkflow("destroy");
destroyWorkflow.on({ delete: {}, workflowDispatch: {} });
destroyWorkflow.addJob("cdk-destroy", preDestroyJobs);

// synthesize the project files
project.synth();