Menimpa perintah bawaan

Menimpa perintah start sebuah image memiliki banyak kegunaan. Salah satunya adalah untuk menguji atau men-debug sesuatu dalam image yang sudah memiliki perintah start untuk kasus penggunaan tertentu. Sebagai contoh, image postgres akan memulai sebuah basis data jika Anda menjalankannya secara normal. Agar dapat masuk ke dalam image dan melihat berkas konfigurasi atau men-debug masalah yang Anda alami, Anda dapat memulainya dengan perintah bash, sebuah shell yang sering tersedia. Apa perintah untuk memulai image postgres secara interaktif dengan shell bash?

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Pengantar Docker

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Latihan ini adalah bagian dari kursus

Pengantar Docker

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You'll go from starting and stopping your first container to seeing how to clean your environment by removing all containers and images. You'll see how to debug issues by running commands inside a container or executing bash commands in a container interactively. All of this is done using the Docker Command Line Interface.

Exercise 1: Running Docker containers Exercise 2: Running your first container Exercise 3: Running a container in the background Exercise 4: An interactive container Exercise 5: Working with Docker containers Exercise 6: Helping a colleague Exercise 7: Cleaning up containers Exercise 8: Managing local docker images Exercise 9: Pulling your first image Exercise 10: Pulling a specific tag Exercise 11: Cleaning up images

Once you are able to manage images and containers, it's time to know how to share images with colleagues or your entire company and to understand how to create your own. Now, you'll build your own images using Dockerfiles. Dockerfiles are text files that include everything needed for Docker to build an image. You'll learn how to create images and will get an introduction to all the essential Dockerfile instructions like FROM, RUN, COPY, and more. By the end of this chapter, you'll have insight into how Docker makes images and be able to create optimized Docker images from scratch.

Exercise 1: Mendistribusikan Docker Image Exercise 2: Membagikan pekerjaan Anda menggunakan registry Docker Exercise 3: Menyimpan image ke sebuah file Exercise 4: Menerima Docker Image Exercise 5: Membuat Docker image Anda sendiri Exercise 6: Membangun image pertama Anda Exercise 7: Bekerja di baris perintah Exercise 8: Menyunting Dockerfile Exercise 9: Membuat Dockerfile Anda sendiri Exercise 10: Mengelola berkas di dalam image Anda Exercise 11: Menyalin berkas ke dalam image Exercise 12: Menyalin folder Exercise 13: Bekerja dengan file yang diunduh Exercise 14: Memilih perintah awal untuk image Docker Anda Exercise 15: Menimpa perintah bawaan

Latihan Saat Ini

Exercise 16: Menarik tag tertentu Exercise 17: Menambahkan CMD

In this final chapter, you’ll focus on making your Dockerfiles configurable and secure. You'll learn how to make your Dockerfiles configurable using the ARG and ENV instructions. You’ll see why changing the user in your images makes them more secure and how to use the USER Dockerfile instruction to do so. To wrap things up, you’ll learn about some essential security best practices when creating Docker Images.

Exercise 1: Introduction to Docker caching Exercise 2: Docker caching Exercise 3: Ordering Dockerfile instructions Exercise 4: Changing users and working directory Exercise 5: WORKDIR and USER Exercise 6: Setting the user Exercise 7: Setting the working directory Exercise 8: Variables in Dockerfiles Exercise 9: Understanding ARG and ENV Exercise 10: Overriding ARG in a build Exercise 11: Changing behavior when starting a container Exercise 12: Creating Secure Docker Images Exercise 13: Security best practices Exercise 14: Keeping packages up-to-date Exercise 15: Be safe, don't use root