How do I host Nexus on AWS EC2?

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Define a VPC
const vpc = new aws.ec2.Vpc("vpc", {
    cidrBlock: "10.0.0.0/16",
    tags: {
        Name: "nexus-vpc",
    },
});

// Define an Internet Gateway
const igw = new aws.ec2.InternetGateway("igw", {
    vpcId: vpc.id,
    tags: {
        Name: "nexus-igw",
    },
});

// Define a Subnet
const subnet = new aws.ec2.Subnet("subnet", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
    tags: {
        Name: "nexus-subnet",
    },
});

// Define a Route Table
const routeTable = new aws.ec2.RouteTable("routeTable", {
    vpcId: vpc.id,
    routes: [
        {
            cidrBlock: "0.0.0.0/0",
            gatewayId: igw.id,
        },
    ],
    tags: {
        Name: "nexus-route-table",
    },
});

// Associate the Route Table with the Subnet
new aws.ec2.RouteTableAssociation("routeTableAssociation", {
    subnetId: subnet.id,
    routeTableId: routeTable.id,
});

// Define a Security Group
const securityGroup = new aws.ec2.SecurityGroup("securityGroup", {
    vpcId: vpc.id,
    description: "Allow HTTP and SSH",
    ingress: [
        { protocol: "tcp", fromPort: 22, toPort: 22, cidrBlocks: ["0.0.0.0/0"] },  // SSH
        { protocol: "tcp", fromPort: 8081, toPort: 8081, cidrBlocks: ["0.0.0.0/0"] },  // Nexus
    ],
    egress: [
        { protocol: "-1", fromPort: 0, toPort: 0, cidrBlocks: ["0.0.0.0/0"] },
    ],
    tags: {
        Name: "nexus-security-group",
    },
});

// Define a Key Pair
const keyPair = new aws.ec2.KeyPair("keyPair", {
    publicKey: "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA...",
});

// Define an EC2 Instance
const instance = new aws.ec2.Instance("instance", {
    instanceType: "t2.micro",
    ami: "ami-0c55b159cbfafe1f0",  // Amazon Linux 2 AMI
    keyName: keyPair.keyName,
    subnetId: subnet.id,
    securityGroups: [securityGroup.name],
    userData: `#!/bin/bash
    sudo yum update -y
    sudo yum install -y java-1.8.0-openjdk
    cd /opt
    sudo wget https://download.sonatype.com/nexus/3/latest-unix.tar.gz
    sudo tar -zxvf latest-unix.tar.gz
    sudo mv nexus-3* nexus
    sudo adduser nexus
    sudo chown -R nexus:nexus /opt/nexus
    sudo chown -R nexus:nexus /opt/sonatype-work
    sudo ln -s /opt/nexus/bin/nexus /etc/init.d/nexus
    sudo chkconfig --add nexus
    sudo chkconfig --levels 345 nexus on
    sudo service nexus start
    `,
    tags: {
        Name: "nexus-instance",
    },
});

// Export the public IP of the instance
export const publicIp = instance.publicIp;
export const publicDns = instance.publicDns;