Dimas Maryanto

Dimas Maryanto

I am an Instructure at Udemy and Chief Technology Officer at PT. Tabeldata Informatika

Docker for DevOps engineer 2 minute read

Hai semuanya, di materi kali ini kita akan membahas untuk memulai menggunakan Docker compose diataranya:

  1. Install Compose
  2. Command-line completion (Optional for linux & mac)
  3. Getting started

Install docker compose

You can run Compose on macOS, Windows, and 64-bit Linux. Prerequisites:

  1. On desktop systems like Docker Desktop for Mac and Windows, Docker Compose is included as part of those desktop installs.
  2. On Linux systems, first install the Docker Engine for your OS as described on the Get Docker page, then come back here for instructions on installing Compose on Linux systems.

For installing docker-compose on linux

Setelah kita install kita bisa coba test, menggunakan perintah seperti berikut:

docker-compose -v

Command-line completion

Compose comes with command completion for the bash and zsh shell.

Using Bash

For Linux:

For Mac:

then add the following to your ~/.bash_profile:

Using Zsh

Make sure you have installed oh-my-zsh on your computer. Add docker and docker-compose to the plugins list in ~/.zshrc to run autocompletion within the oh-my-zsh shell.

Getting started

Untuk memulai kita akan membuat container menggunakan Docker compose, sebagai contoh menjalankan image nginx dan postgresql secara bersamaan. Tahapnya adalah

  1. Buat file dengan nama docker-compose.yaml seperti berikut:

  2. Kemudian jalankan containernya dengan menggunakan perintah seperti berikut:

  3. Jika sudah kita bisa stop containernya dengan menggunakan perintah seperti berikut:

Jika di jalankan maka outputnya seperti berikut:

➜ 09-docker-compose  docker-compose pull
Pulling webapp ... done
Pulling db     ... done

➜ 09-docker-compose  docker-compose up -d
Creating 09-docker-compose_webapp_1 ... done
Creating 09-docker-compose_db_1     ... done

➜ 09-docker-compose  docker-compose ps
           Name                         Command               State                    Ports
--------------------------------------------------------------------------------------------------------------
09-docker-compose_db_1       docker-entrypoint.sh postgres    Up      0.0.0.0:5432->5432/tcp,:::5432->5432/tcp
09-docker-compose_webapp_1   /docker-entrypoint.sh ngin ...   Up      0.0.0.0:80->80/tcp,:::80->80/tcp

➜ 09-docker-compose  curl localhost


StatusCode        : 200
StatusDescription : OK
Content           : <!DOCTYPE html>
                    <...
RawContent        : HTTP/1.1 200 OK
                    Connection: keep-alive
                    Accept-Ranges: bytes
                    Content-Length: 612
                    Content-Type: text/html
                    Date: Wed, 11 Aug 2021 01:13:48 GMT
                    ETag: "60e46fc5-264"
                    Last-Modified: Tue, 06 Jul 2021 ...
Headers           : {[Connection, keep-alive], [Accept-Ranges, bytes], [Content-Length, 612], [Content-Type,
                    text/html]...}
ParsedHtml        : System.__ComObject
RawContentLength  : 612

➜ 09-docker-compose  docker-compose down
Stopping 09-docker-compose_webapp_1 ... done
Stopping 09-docker-compose_db_1     ... done
Removing 09-docker-compose_webapp_1 ... done
Removing 09-docker-compose_db_1     ... done
Removing network 09-docker-compose_default

Conclusion

Jadi dengan menggunakan docker-compose kita bisa mempersingkat dan mendokumentasikan perintah yang kita jalankan, jika kita menggunakan docker command seperti biasa maka sama seperti kita menulis seperti berikut:

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