Certified Docker Professional

TABLE OF CONTENT

Introduction to the Course

• Course Overview

Docker Installation

• Installing Docker Desktop on Mac
• Installing Docker Desktop on Windows
• Installing Docker Engine on Linux

Basic Docker Container (Ubuntu, Busybox, Alpine)

• Running Hello-World Container
• Running Ubuntu Container
• Running Busybox Container
• Alpine Versus Busybox Images

Port and Volume Mapping in the Docker Containers

• Running Nginx with Exposed Port
• Nginx Container with Custom Content
• Adding Favicon to the Project
• Using Path Variable in Volume Mapping

Docker Containers Management (Ubuntu, Nginx)

• Running Containers in Background
• Running Container with Pseudo TTY
• Creating Multiple Ubuntu Containers from the Same Image
• Running Multiple Nginx Servers
• Cleaning Up Stopped Containers

Running Python Applications in Docker

• Creating Python Containers
• Simple Python Program
• Challenge: Simple Python Calendar App
• Challenge Solution: Simple Python Calendar App

Running Node.js Applications in Docker

• Running Node.js Containers
• Hello World Application with Node
• Express Web Server Using Node
• Add Handling of the SIGINT and SIGTERM Signals
• Challenge: Create Files Handling Node App
• Challenge Solution: Create Files Handling Node App
• Conclusion - Containers can Create and Modify External Files

Running MongoDB Containers

• Pulling Mongo Image and Creating the First Mongo Container
• Starting Additional Processes in the Running Container
• What is Entry Point and Where is it Located
• Creating New Mongo Database Using Mongo Shell
• Running Mongo Container with Persistent Database

Communication Between Containers and Environment Variables (MySQL, phpMyAdmin)

• Starting WordPress Container
• Plan for the Next Lectures - Networks and Environment Variables
• Default Bridge Network and Communication Between Containers
• Exploring Environment Variables
• Starting MySQL Container with env Variable
• Launching Another phpMyAdmin Container
• Connecting phpMyAdmin to MySQL Container
• Making Notes of the Commands

Default and Custom Bridge Networks in Docker (WordPress, MySQL)

• Communication Using Hostnames in the Default Bridge Network
• Inspecting Default Bridge Network
• Creating New Custom Bridge Network
• Creating Busybox Containers in the Custom Network
• Using Custom Persistent Names for Connectivity in the Custom Network
• MySQL and phpMyAdmin in the Custom Network
• Challenge: WordPress with MySQL and phpMyAdmin
• Challenge Solution: WordPress with MySQL and phpMyAdmin - Part 1
• Challenge Solution: WordPress with MySQL and phpMyAdmin - Part 2
• Summary for the WordPress and MySQL Setup

Additional Containers - Elasticsearch, Redis, Httpd

• Getting Docker Image with Curl Utility
• Challenge: Run Elasticsearch and Curl Containers in the Custom Network
• Challenge Solution: Run Elasticsearch and Curl Containers in the Custom Network
• Inserting Documents into Elasticsearch Index
• Starting Redis Container
• Challenge: Redis and Redis-Commander
• Challenge Solution: Redis and Redis-Commander
• Launching Httpd Container

Docker on Practice Summary and Introduction to the Docker Fundamentals

• Docker Fundamentals Practical Section Summary
• Introduction to the Docker Fundamentals

What is Docker and Docker Components

• Virtual Machines Versus Docker Containers
• Virtual Machines Architecture
• How I Use Virtual Machines
• My Computer Just Ran Out of Memory
• Docker Containers Architecture
• How Docker is Running on Different Operating Systems
• Container Processes and Resources
• Docker Components: Overview
• Docker Client
• Docker Server
• Docker Host
• Docker Image
• Docker Container
• Docker Repository
• Docker Registry
• Docker Components: Summary

Introduction to the Images and Containers

• Docker Commands Versus Management Commands
• Alternative Commands
• Basic Container and Images Commands
• Cleaning Up My Docker Setup
• Pulling Images from Docker Hub
• What is Docker Image
• Creating New Container from the Image
• What is CMD in the Docker Image
• What is Docker Container
• Summary for the Introduction to Images and Containers

Getting Started with Linux

• Why You Need to Know Linux while Studying Docker
• Introduction to the Linux Section
• Possible Options to Use Linux on macOS and Windows
• Creating Linux Container Using Docker
• What is Shell, Terminal, and Command
• Getting Information about Linux Computer
• How Shell Understands that You Have Entered a Command
• Getting Help about Commands Using Man Utility
• Command Options
• Command Arguments
• Arguments for Options

Processes in Linux

• What Are Processes
• List Running Processes
• Starting Additional Processes and Killing Processes
• Installing htop Package Using apt-get
• Using the htop Utility
• Summary for Processes Monitoring

Data Streams and Piping in Linux

• Data Streams of the Process
• Redirecting STDOUT and STDERR to the File
• Where Process Data Streams Send Data by Default
• How to Send Data to STDIN and Redirect STDOUT and STDERR
• Piping
• Summary for Data Streams and Piping

Files and Directories Management in Linux

• Introduction to Files and Directories Management
• Linux File System Structure and Navigation
• Listing Files and Directories
• Exploring Subdirectories of the Root Directory
• Creating and Removing Directories and Files
• Creating New Files
• Editing Files Using Vim and Nano Editors
• Copy and Move Files and Directories
• Reading Files
• Filtering Text Using the grep Command
• Soft Versus Hard Links
• Creating Hard and Soft Links

Search Operations in Linux

• Introduction to the Find Command
• Searching Files Using the Find Command
• Some Other Examples of the Find Command
• Executing Additional Commands Inside of the Find Operation
• Xargs Command
• Piping Results of the Find Command to the Other Command Using Xargs

Compressing and Sorting in Linux

• Overview of the tar and gzip Utilities
• Creating and Extracting Compressed Archive Using tar and gzip
• Sorting Files Using Ls Command
• Sorting Contents of the Files Using Sort Utility

User Management and Permissions in Linux

• Introduction to the User Management in Linux
• Creating Users Using useradd Command
• Creating New User Using adduser Command
• Changing Ownership of the File
• Changing Permissions

Executable Files and Scripting in Linux

• Creating Executable Script
• Adding Path to the Scripts into the PATH Variable
• Summary for Users, Permissions, and Scripts

Networking in Linux

• Introduction to the Linux Networking
• Exploring IP address settings
• Verifying Connectivity with Remote Servers
• Enabling SSH on the Linux Server
• Connecting to the Linux Server Remotely Via SSH
• Using curl and wget Utilities

Environment Variables in Linux

• Environment Variables
• SOLUTION - Script with Environment Variables Access
• Linux: Summary

Launching Course Project Application without Docker

• Introduction to the Dockerfiles and Docker Compose
• Cloning Remote Docker Repository with Project Files
• Project Overview
• Getting Unsplash API Key
• Installing Node.js and NPM
• Installing Python, Pip, and Pipenv on macOS
• Installing Python, Pip, and Pipenv on Windows
• Starting Frontend App Using NPM
• Starting API Application Using Python
• Verifying How Images Gallery Project Works
• Summary for Start of the App without Docker

Building Custom Images Using Dockerfiles

• Initializing Git and GitHub for the Project
• Installing Docker and Hello-World Using Docker
• Creating Dockerfile for the Python API Service
• Building Docker Image for the API Service
• Running API Containers Based on the Built Docker Image
• Analyzing API Docker Container from Inside
• Docker Image for the API Service: Summary
• Creating Dockerfile for the Frontend Application
• Building Docker Image for the Frontend App
• Running Docker Container for the Frontend Service
• Exploring Frontend Container from Inside
• Why You Need to Have the node_modules Folder and Python venv Folders Locally
• Running Both Frontend and API Containers in Background

Launching Multiple Services Using Docker Compose

• Creating a Basic docker-compose File
• Bringing Up Both Containers Using docker-compose
• How to Operate Containers Using docker-compose
• Creating Volumes Mapping for the Frontend Service
• Fix Volumes Sync in the React Container
• Enabling Volumes Mapping for the API Service
• Enabling auto-restart and docker-compose Summary for API and Frontend
• Why Do We Need Mongo and mongo-express Services
• Mongo and mongo-express Official Docker Images Overview
• Adding Mongo and mongo-express Services to the docker-compose File
• Starting All Services Including Mongo and mongo-express Using docker-compose

Exploring Docker Compose Setup

• Docker Desktop Overview
• Using Mongo Shell and mongo-express GUI
• MongoDB Data is Now Deleted after docker-compose Restart
• Configuring Persistent Data Volume for the Mongo Container
• Verifying Persistent MongoDB Storage Using Volume
• Mongo and mongo-express Setup Summary
• How docker-compose Containers Communicate with Each Other
• Exploring Networking Between Docker Containers