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readme.md

Docker

Projects

  • Hello World - Java, JavaScript and Python
  • 2 Microservices - Currency Exchange and Currency Conversion

Steps

  • Step 01 - Docker and DevOps - Installation and Introduction
  • Step 02 - Your First Docker Usecase
  • Step 03 - Important Docker Concepts - Registry, Repository, Tag, Image and Container
  • Step 04 - Playing with Docker Images - Java, JavaScript and Python
  • Step 05 - Playing with Docker - Detached Mode and Logs
  • Step 06 - Playing with Docker Images and Containers
  • Step 07 - Understanding Docker Architecture - Docker Client, Docker Engine
  • Step 08 - Understanding Docker Popularity - My 3 Top Reasons
  • Step 09 - Learning Docker Images - Commands
  • Step 10 - Learning Docker Containers - Commands
  • Step 11 - Learning Docker Commands - system and stats
  • Step 12 - Building Docker Images for Python Application
  • Step 13 - Understanding creation of Docker Images in Depth
  • Step 14 - Pushing Python App Docker Image to Docker Hub
  • Step 15 - Building and Pushing Docker Image for Node JavaScript App
  • Step 16 - Building and Pushing Docker Image for Java Application
  • Step 17 - Building Efficient Docker Images - Improving Layer Caching
  • Step 18 - Understanding ENTRYPOINT vs CMD
  • Step 19 - Docker and Microservices - Quick Start
  • Step 20 - Introduction to Microservices - CE and CC
  • Step 21 - Running Microservices as Docker Containers
  • Step 22 - Using Docker Link to Connect Microservices
  • Step 23 - Using Custom Networking to Connect Microservices
  • Step 24 - Using Docker Compose to Simplify Microservices Launch
  • Step 25 - Understanding Docker Compose further

Registry and Repositories

Commands

# Check the version of Docker installed
docker --version

# Run a Docker container with a Python hello world application
docker run -p 5000:5000 in28min/hello-world-python:0.0.1.RELEASE

# Run a Docker container with a Java hello world application
docker run -p 5000:5000 in28min/hello-world-java:0.0.1.RELEASE

# Run a Docker container with a Node.js hello world application
docker run -p 5000:5000 in28min/hello-world-nodejs:0.0.1.RELEASE

# Run a Docker container with a Node.js hello world application in detached mode
docker run -d -p 5000:5000 in28min/hello-world-nodejs:0.0.1.RELEASE

# Run a Docker container with a Python hello world application in detached mode
docker run -d -p 5001:5000 in28min/hello-world-python:0.0.1.RELEASE

# View the logs of a Docker container
docker logs 04e52ff9270f5810eefe1f77222852dc1461c22440d4ecd6228b5c38f09d838e

# View the logs of a Docker container with a given container ID or name
docker logs c2ba

# List Docker images
docker images

# List running containers
docker container ls

# List all containers, including stopped ones
docker container ls -a

# Stop a running container with a given container ID
docker container stop f708b7ee1a8b

# Run a Docker container with a REST API in detached mode
docker run -d -p 5001:8080 in28min/hello-world-rest-api:0.0.1.RELEASE

# Pull a Docker image from a registry
docker pull mysql

# Search for Docker images in a registry
docker search mysql

# Show the history of a Docker image
docker image history in28min/hello-world-java:0.0.1.RELEASE

# Show the history of a Docker image with a given image ID
docker image history 100229ba687e

# Inspect a Docker image
docker image inspect 100229ba687e

# Remove a Docker image
docker image remove mysql

# Remove a Docker image with a given image name and tag
docker image remove in28min/hello-world-java:0.0.1.RELEASE

# Remove a Docker container with a given container ID or name
docker container rm 3e657ae9bd16

# List all containers, including stopped ones
docker container ls -a

# Pause a running container with a given container ID or name
docker container pause 832

# Unpause a paused container with a given container ID or name
docker container unpause 832

# Stop a running container with a given container ID or name
docker container stop 832

# Inspect a Docker container with a given container ID or name
docker container inspect ff521fa58db3

# Remove all stopped containers
docker container prune

# Show Docker system information
docker system

# Show Docker disk usage
docker system df

# Show detailed Docker system information
docker system info

# Remove all unused Docker resources
docker system prune -a

# Display the top resource-consuming processes of a Docker container with a given container ID or name
docker top 9009722eac4d

# Show live resource usage statistics of a Docker container with a given container ID or name
docker stats 9009722eac4d

# Run a Docker container with a Java hello world application, limited to 512MB memory
docker container run -p 5000:5000 -d -m 512m in28min/hello-world-java:0.0.1.RELEASE

# Run a Docker container with a Java hello world application, limited to 512MB memory and CPU quota of 50%
docker container run -p 5000:5000 -d -m 512m --cpu-quota=50000 in28min/hello-world-java:0.0.1.RELEASE

# Show Docker system events
docker system events




# Show live resource usage statistics of a Docker container with a given container ID or name
docker container stats 4faca1ea914e3e4587d1d790948ec6cb8fa34f26e900c12632fd64d4722fd59a

# Show live resource usage statistics of a Docker container with a given container ID or name
docker stats 42f170966ce613d2a16d7404495af7b3295e01aeb9142e1fa1762bbdc581f502




# Change directory to the Python hello world project
cd /in28Minutes/git/devops-master-class/projects/hello-world/hello-world-python

# Build a Docker image with a given tag
docker build -t in28min/hello-world-python:0.0.2.RELEASE .

# Run a Docker container with a Python hello world application, mapped to port 5000
docker run -p 5000:5000 -d in28min/hello-world-python:0.0.2.RELEASE

# Show the history of a Docker image with a given image ID
docker history e66dc383f7a0

# Push a Docker image to a registry
docker push in28min/hello-world-python:0.0.2.RELEASE




# Change directory to the Node.js hello world project
cd ../hello-world-nodejs/

# Build a Docker image with a given tag
docker build -t in28min/hello-world-nodejs:0.0.2.RELEASE .

# Run a Docker container with a Node.js hello world application, mapped to port 5000
docker container run -d -p 5000:5000 in28min/hello-world-nodejs:0.0.2.RELEASE

# Push a Docker image to a registry
docker push in28min/hello-world-nodejs:0.0.2.RELEASE

# Change directory to the Java hello world project
cd ../hello-world-java/

# Build a Docker image with a given tag
docker build -t in28min/hello-world-java:0.0.2.RELEASE .

# Run a Docker container with a Java hello world application, mapped to port 5000
docker run -d -p 5000:5000 in28min/hello-world-java:0.0.2.RELEASE

# Push a Docker image to a registry
docker push in28min/hello-world-java:0.0.2.RELEASE




# Run a Docker container with a Node.js hello world application, mapped to port 5001 and ping google.com
docker run -d -p 5001:5000 in28min/hello-world-nodejs:0.0.3.RELEASE ping google.com




# Run a Docker container with a currency exchange service
docker run -d -p 8000:8000 --name=currency-exchange in28min/currency-exchange:0.0.1-RELEASE

# Run a Docker container with a currency conversion service
docker run -d -p 8100:8100 --name=currency-conversion in28min/currency-conversion:0.0.1-RELEASE




# List Docker networks
docker network ls

# Inspect a Docker network with a given network name
docker network inspect bridge




# Run a Docker container with a currency conversion service, linked to the currency exchange service and environment variable set
docker run -d -p 8100:8100 --env CURRENCY_EXCHANGE_SERVICE_HOST=http://currency-exchange --name=currency-conversion --link currency-exchange in28min/currency-conversion:0.0.1-RELEASE




# Create a Docker network with a given network name
docker network create currency-network

# Stop a running container with a given container ID or name
docker container stop currency-exchange

# Stop a running container with a given container ID or name
docker container stop currency-conversion

# Run a Docker container with a currency exchange service, connected to the currency-network
docker run -d -p 8000:8000 --name=currency-exchange --network=currency-network in28min/currency-exchange:0.0.1-RELEASE

# Run a Docker container with a currency conversion service, connected to the currency-network and environment variable set
docker run -d -p 8100:8100 --env CURRENCY_EXCHANGE_SERVICE_HOST=http://currency-exchange --name=currency-conversion --network=currency-network in28min/currency-conversion:0.0.1-RELEASE




# Check the version of Docker Compose installed
docker-compose --version

# Change directory to the microservices folder
cd ../../microservices/

# Start the services defined in the Docker Compose file
docker-compose up

# Start the services defined in the Docker Compose file in detached mode
docker-compose up -d

# List running containers
docker container ls

# List Docker networks
docker network ls

# Inspect a Docker network with a given network name
docker network inspect microservices_currency-compose-network

# Stop the services defined in the Docker Compose file
docker-compose down

# List all containers, including stopped ones
docker container ls -a

# Remove all unused Docker resources
docker system prune -a

# Validate the Docker Compose file
docker-compose config

# List Docker images used by the services defined in the Docker Compose file
docker-compose images

# List the running services defined in the Docker Compose file
docker-compose ps

# Display the top resource-consuming processes of the services defined in the Docker Compose file
docker-compose top


# Build a Docker image for a Java hello world application with a given tag
docker build -t in28min/hello-world-java:0.0.1.RELEASE .

# Push the Docker image with the specified tag to a registry
docker push in28min/hello-world-java:0.0.1.RELEASE




# Build a Docker image for a Python hello world application with a given tag
docker build -t in28min/hello-world-python:0.0.1.RELEASE .

# Push the Docker image with the specified tag to a registry
docker push in28min/hello-world-python:0.0.1.RELEASE




# Build a Docker image for a Node.js hello world application with a given tag
docker build -t in28min/hello-world-nodejs:0.0.1.RELEASE .

# Push the Docker image with the specified tag to a registry
docker push in28min/hello-world-nodejs:0.0.1.RELEASE

Host Networking in Docker for Mac and Windows

The host networking driver only works on Linux hosts, and is not supported on Docker Desktop for Mac, Docker Desktop for Windows, or Docker EE for Windows Server.