How to create api endpoint after created the docker container on ec2 - amazon-web-services

Question

I've created a docker container for my server on ec2 using nodejs.
I wonder what is the next step I should do if I want to create an rest API endpoint for public access.
Dockerfile
FROM node:lts-alpine
WORKDIR /server
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3030
CMD ["npm", "run", "dev"]
docker-compose.yml
version: '2.1'
services:
test-db:
image: mysql:5.7
environment:
- MYSQL_ALLOW_EMPTY_PASSWORD=true
- MYSQL_USER=admin
- MYSQL_PASSWORD=12345
- MYSQL_DATABASE=test
volumes:
- ./db-data:/var/lib/mysql
ports:
- 3306:3306
test-web:
environment:
- NODE_ENV=local
#- DEBUG=*
- PORT=3030
build: .
command: >
./wait-for-db-redis.sh test-db npm run dev
volumes:
- ./:/server
ports:
- "3030:3030"
depends_on:
- test-db

Answer 1

From your comments its seems that you want to use https for your endpoint. And probably this is the greatest thing to setup, assuming you already own a domain, e.g. myapi.com. If you don't have a domain, you have to buy one if you want custom url.
There are several possibilities to add https:
Add nginx to your application as extra container, which will accept connections on port 443 and forward to your app on port 3030. nginx can be setup to use https. For that you need valid, public ssl certificates from a third party (e.g. letsencrypt). You could AWS ACM to get them, but for instance they only work with nitro-enclave instances. For instance you can use EIP and target Route53 record from your domain to the EIP.
Front you instance with Load Balancer (LB). This is the easiest to setup, as you can get free SSL certs from ACM, and deploy them on the LB. Set your Route53 domain to point to LB url as an alias record.
Setup API Gateway or CloudFront distro in-front of your EC2 instance. The issue is that connections between the API/CF and your instance will go over HTTP, unless you setup valid SSL certificates on your instance, like in the first possibility. You will also need EIP for the instance, or front it with LB, before using API Gateway or CloudFront.