feat: add ecr and ecs config

.gitignore

@@ -1 +1,2 @@
-node_modules
+/bin/
+/node_modules/

Pulumi.staging-alt3.yaml

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+config:
+  aws:region: ap-southeast-1

Pulumi.yaml

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+name: formsg-infra
+runtime:
+  name: nodejs
+  options:
+    packagemanager: npm
+description: pulumi config for formsg
+config:
+  pulumi:tags:
+    value:
+      pulumi:template: aws-typescript

ecr.ts

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+import * as awsx from "@pulumi/awsx";
+
+// ECR Repository used to store the Docker images built by the CI/CD pipeline on Staging-alt3 branch
+const formsg_staging_alt3_repo = new awsx.ecr.Repository("formsg/staging-alt3"); 
+
+// Build the staging-alt3 image and push it to the ECR repository
+const staging_alt3_image = new awsx.ecr.Image("staging-alt3-image", {
+  repositoryUrl: formsg_staging_alt3_repo.url,
+  platform: "linux/amd64", 
+  context: './app'
+})
+
+export const staging_alt3_image_uri = staging_alt3_image.imageUri;

ecs.ts

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+import * as awsx from "@pulumi/awsx";
+import * as aws from "@pulumi/aws";
+import * as pulumi from "@pulumi/pulumi";
+import { staging_alt3_image_uri } from "./ecr";
+
+// Required to access container over port 80 using a stable IP address 
+const lb = new awsx.lb.ApplicationLoadBalancer("formsg-staging-alt3-lb");
+
+const cluster = new aws.ecs.Cluster("formsg-staging-alt3-cluster");
+
+const service = new awsx.ecs.FargateService("formsg-staging-alt3-service", {
+    cluster: cluster.arn,
+    desiredCount: 1,
+    assignPublicIp: true, 
+    taskDefinitionArgs: {
+      container: {
+        name: "formsg_staging_alt3",
+        image: staging_alt3_image_uri, 
+        essential: true,
+        cpu: 128,
+        memory: 512, 
+        portMappings: [{
+          containerPort: 80,
+          targetGroup: lb.defaultTargetGroup
+        }]
+      }
+    }
+});
+
+// uri to access the staging-alt3 service 
+export const url = pulumi.interpolate`http://${lb.loadBalancer.dnsName}`;

index.ts

@@ -1,5 +1,2 @@
-import {} from '@opengovsg/pulumi-components'
-import * as aws from '@pulumi/aws'
-import * as pulumi from '@pulumi/pulumi'
-
-//   Config goes here...
+import * as ecs from "./ecs";
+import * as ecr from "./ecr";