How to test

Build & start containers

$ docker-compose build

$ docker-compose up

Exec the curl on the container

Access to the container

• i.e) rails_puma_5_6_5_app

$ docker-compose run --rm puma_5_6_5_app bash

Accessable containers

• puma_4_3_3_app
• puma_5_6_5_app
• unicorn_6_1_0_app
• thin_1_8_1_app
• webrick_1_7_0_app

Curl

$ dd if=/dev/zero bs=1 count=10 | curl unicorn_6_1_0_app:3000/webapi -X POST  -H 'Transfer-Encoding: chunked' --data-binary @-

And you can see the result on the log like this

rails-experiment-unicorn_6_1_0_app-1  | "rack.input: \u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000"
rails-experiment-unicorn_6_1_0_app-1  | "request.headers['CONTENT_LENGTH']: "
rails-experiment-unicorn_6_1_0_app-1  | "request.body: #<Rack::Lint::InputWrapper:0x0000aaab109b4428>"
rails-experiment-unicorn_6_1_0_app-1  | "request.raw_post: "
rails-experiment-unicorn_6_1_0_app-1  | 172.22.0.5 - - [21/Dec/2022:02:38:23 +0000] "POST /webapi HTTP/1.1" 200 - 0.0226

Debug code

It's in each app's app/controllers/webapi_controller.rb