Docker allows packaging applications and dependencies into standardized images for development and distribution. Images act as templates for lightweight containers that share resources and isolate processes. Containers provide scalability, portability across operating systems, and use of common components. Example uses include creating reusable development environments, deploying scalable systems from images, and distributing applications through containers.

1. Docker - Get started
Basic concepts
Reference from Docker Official

2. - What’s Docker ?
- Why Docker?
- Image & Container
- VMs vs Container
- Dockerfile ?
Table of contents
2. Use cases
- Deploy environment
- Scalable system
- Distribution system
3. Examples
- Build base PHP
development
environment
- Full stack deploy
DEV -> TEST ->
PROD
1. Concept

3. Docker allows you to package an application with all of its dependencies into a
standardized unit for software development
● Features:
- Own process space
- Own network interface
- Can run stuff as root
- Can have its own /sbin/init
- Chroot-jail environment -> Isolated processes
- Shared OS with host
=> Lightweight + Open + Secure
What’s Docker ?

4. + Lightweight
+ Open
+ Secure
+ Scalable
+ Copying/Moving
● Run anywhere
- Linux
- Windows
- Unix
● Run anything
- Webapps
- Backend
- SQL, NoSQL
- Bigdata
- Message queue … and more
=> Scalable + Multi distribution system
Why Docker ?

5. ● Typical
laptop runs
10-100
containers
easily
● Typical
server can
run 100-
1000
containers

6. ● An Image is software you load into a
container
- Pre-build
- Inheritable
- Simply configure
● A Container is a stripped-to-basics version
of a Linux operating system
=> Similar definition of Class (Image) &
Object (Container) in OOP
Images & Containers ?
Image
container container container

7. VMs vs Docker Containers

8. FROM ubuntu # pull (inherit) from ubuntu kernel
RUN apt-get update && apt-get install -y apache2
php5 libapache2-mod-php5 # install new package
EXPOSE 80 # open port 80
CMD [‘service’, ‘apache2’, ‘start’] # run apache2
Dockerfile example
Your Image
container container container
Ubuntu

10. - What’s Docker ?
- Why Docker?
- Image & Container
- VMs vs Container
- Dockerfile ?
Table of contents
2. Use cases
- Deploy environment
- Scalable system
- Distribution system
3. Examples
- Build base PHP
development
environment
- Full stack deploy
DEV -> TEST ->
PROD
1. Concept

11. Dev Environment & Scalable System
Base PHP
container
container
container
Base Kernel
Base MySQL Base Django
container
container
DB

13. - What’s Docker ?
- Why Docker?
- Image & Container
- VMs vs Container
- Dockerfile ?
Table of contents
2. Use cases
- Deploy environment
- Scalable system
- Distribution system
3. Examples
- Build base PHP
development
environment
- Full stack deploy
DEV -> TEST ->
PROD
1. Concept

14. Examples
Base PHP
container
container
container
Base Dev Env
Base MySQL
Base Django
container
container
DB