Annotation based docker extension implementation for ballerina.

• Dockerfile generation based on @docker:Config annotations.
• Docker image generation.
• Docker push support with docker registry.
• Docker based ballerina debug support.
• Copy file support.

• Supported with ballerina services or listeners.

• Supported with ballerina services or listeners.

• Supported with ballerina listeners.

1. Download and install JDK 8 or later
2. Get a clone or download the source from this repository (https://github.com/ballerinax/docker)
3. Run the Maven command mvn clean install from within the docker directory.
4. Copy target/docker-extension-0.9***.jar file to <BALLERINA_HOME>/bre/lib directory.
5. Run ballerina build <.bal filename> to generate artifacts.

The docker artifacts will be created in a folder called docker with following structure.

|── docker
|    └── Dockerfile
└── outputfilename.balx

Use the "BAL_DOCKER_WINDOWS=true" environment variable to enable building docker images supporting Windows platform.

Use the "BAL_DOCKER_DEBUG=true" environment variable to enable docker related debug logs when building the ballerina source file.

import ballerina/http;
import ballerina/log;
import ballerina/docker;

@docker:Expose{}
listener http:Listener helloWorldEP = new(9090);

@http:ServiceConfig {
      basePath: "/helloWorld"
}
@docker:Config {
    registry: "docker.abc.com",
    name: "helloworld",
    tag: "v1.0"
}
service helloWorld on helloWorldEP {
    resource function sayHello(http:Caller caller, http:Request request) {
        http:Response response = new;
        response.setTextPayload("Hello, World from service helloWorld ! \n");
        var responseResult = caller->respond(response);
        if (responseResult is error) {
            log:printError("error responding back to client.", err = responseResult);
        }
    }
}

Refer samples for more info.