ballerina init  -i

├── Ballerina.toml

├── Dockerfile

├── README.md

├── docker-compose.yml

├── hello_service.bal

├── target

│ └── hello_service.balx

└── tests

    └── hello_service_test.bal

// A system package containing protocol access constructs

// Package objects referenced with 'http:' in code

import ballerina/http;

import ballerina/io;

// A service endpoint represents a listener

endpoint http:Listener listener {

port:9090

};

// A service is a network-accessible API

// Advertised on '/hello', port comes from listener endpoint

service<http:Service> hello bind listener {

// A resource is an invokable API method

// Accessible at '/hello/sayHello

// 'caller' is the client invoking this resource

sayHello (endpoint caller, http:Request request) {

// Create object to carry data back to caller

http:Response response = new;

// Objects and structs can have function calls

response.setTextPayload("Hello Ballerina!\n");

// Send a response back to caller

// Errors are ignored with '_'

// -> indicates a synchronous network-bound call

_ = caller -> respond(response);

}

}

# build stage

# FROM ballerina/ballerina-platform AS build-env

# ADD . /home/ballerina/

# RUN ballerina build hello_service.bal

# RUN ls .

FROM ballerina/ballerina

EXPOSE 9090

COPY hello_service.bal /home/ballerina

RUN ls .

ENTRYPOINT [ "ballerina","run","hello_service.bal" ]

version: "3"

services:

http:

build: .

image: myhttp

ports:

- "9099:9090"

docker-compose build

docker-compose up -d