Docker

Resources / Skills

Docker Skill Overview

Welcome to the Docker Skill page. You can use this skill
template as is or customize it to fit your needs and environment.

Category:

Description

Docker is a popular tool used in software development that creates, deploys, and runs applications by using containers. These containers allow developers to package an application with all the parts it needs, such as libraries and other dependencies, and ship it all out as one package. This ensures that the application will run on any other machine regardless of any customized settings that the machine might have. Docker is instrumental in achieving continuous integration and delivery in DevOps practices. It's also known for its efficiency, consistency, and scalability, making it a go-to solution for many organizations' cloud strategies.

Expected Behaviors

Fundamental Awareness
At the fundamental awareness level, individuals should have a basic understanding of what Docker is and the benefits of containerization. They should be familiar with basic Docker terminology such as images and containers, and understand Docker's role in DevOps.
Novice
Novices should be able to install Docker on various operating systems and run simple Docker commands. They should know how to pull and run a Docker image from Docker Hub, create and manage Docker containers, and have a basic understanding of Dockerfile and docker-compose.yml.
Intermediate
At the intermediate level, individuals should be capable of building custom Docker images using Dockerfile and managing multi-container applications using Docker Compose. They should understand Docker networks and volumes for data persistence, be able to debug running Docker containers, and implement basic security practices in Docker.
Advanced
Advanced users should be proficient in optimizing Dockerfiles for faster builds and smaller images, managing Docker in production environments, and integrating Docker with CI/CD pipelines. They should also be adept at monitoring and logging in Docker, and implementing advanced Docker networking and storage strategies.
Expert
Experts should be able to design complex multi-container applications with Docker, troubleshoot and resolve Docker performance issues, and secure Docker at scale in production. They should have a deep understanding of Docker internals and architecture, and may even contribute to Docker open-source projects.

Micro Skills

Fundamental Awareness13 micro skills • 3 months work experience

Knowing the definition of Docker

Understanding the concept of containerization

Recognizing the difference between Docker and virtual machines

Identifying the advantages of using Docker over traditional VMs

Understanding how Docker improves development workflow

Recognizing how Docker can ensure consistency across multiple environments

Understanding what a Docker image is

Understanding what a Docker container is

Knowing the difference between a Docker image and a Docker container

Familiarity with terms like Dockerfile, Docker Compose, Docker Hub

Understanding how Docker fits into the CI/CD pipeline

Recognizing the role of Docker in microservices architecture

Knowing how Docker can be used for environment isolation in testing

Novice21 micro skills • 6 months work experience

Downloading Docker for Windows

Downloading Docker for Mac

Installing Docker on Linux distributions

Verifying Docker installation

Understanding Docker command syntax

Using 'docker run' to start a container

Using 'docker ps' to list containers

Using 'docker stop' to stop a container

Searching for images on Docker Hub

Using 'docker pull' to download an image

Running a container from a downloaded image

Understanding the difference between local and remote images

Creating a new container with 'docker run'

Starting and stopping existing containers

Removing containers with 'docker rm'

Inspecting container details with 'docker inspect'

Knowing the purpose of a Dockerfile

Writing a simple Dockerfile

Building an image from a Dockerfile

Understanding the structure of a docker-compose.yml file

Running a multi-container application with Docker Compose

Intermediate18 micro skills • 12 months work experience

Writing a basic Dockerfile

Understanding different Dockerfile instructions (e.g., FROM, RUN, CMD)

Tagging and pushing Docker images to a registry

Writing a basic docker-compose.yml file

Understanding different Docker Compose services

Scaling services with Docker Compose

Creating and managing Docker networks

Understanding Docker network drivers

Creating and managing Docker volumes

Understanding the difference between bind mounts and volumes

Inspecting a running Docker container

Accessing logs of a Docker container

Executing commands in a running Docker container

Understanding common Docker error messages

Understanding Docker security risks

Running Docker containers with non-root users

Limiting resources of a Docker container

Scanning Docker images for vulnerabilities

Advanced20 micro skills • 24 months work experience

Understanding and applying best practices for writing Dockerfiles

Using multi-stage builds to reduce image size

Leveraging build cache for faster image creation

Removing unnecessary files and packages from the final image

Deploying Docker containers on various cloud platforms

Scaling Docker applications with orchestration tools like Kubernetes

Automating Docker container health checks

Implementing zero-downtime deployments with Docker

Building Docker images in CI/CD pipelines

Running automated tests in Docker containers

Deploying Docker containers from CI/CD pipelines

Securing Docker image delivery in CI/CD pipelines

Setting up Docker logging drivers

Collecting Docker metrics with monitoring tools

Analyzing Docker logs for troubleshooting

Implementing centralized logging for Docker containers

Creating and managing custom Docker networks

Configuring Docker for network performance optimization

Implementing persistent storage solutions for Docker

Understanding and using Docker storage drivers

Expert20 micro skills • 48 months work experience

Understanding and implementing service discovery patterns

Designing for fault tolerance and high availability

Implementing advanced networking configurations

Managing stateful and stateless services in Docker

Profiling container performance

Identifying and resolving container resource constraints

Debugging network-related performance issues

Optimizing Docker storage drivers and volumes

Implementing secure user management and access control

Hardening Docker daemon configuration

Applying security updates and patches to Docker environment

Monitoring and auditing Docker for security incidents

Understanding Docker's use of Linux namespaces and cgroups

Knowledge of Docker image layers and union file systems

Familiarity with Docker's networking model and implementation

Understanding the lifecycle of a Docker container

Familiarity with Docker's codebase and development practices

Ability to write and review Docker-related code

Experience with submitting pull requests to Docker projects

Participation in Docker community discussions and decision-making

Tech Experts

StackFactor Team

We pride ourselves on utilizing a team of seasoned experts who diligently curate roles, skills, and learning paths by harnessing the power of artificial intelligence and conducting extensive research. Our cutting-edge approach ensures that we not only identify the most relevant opportunities for growth and development but also tailor them to the unique needs and aspirations of each individual. This synergy between human expertise and advanced technology allows us to deliver an exceptional, personalized experience that empowers everybody to thrive in their professional journeys.

Become a StackFactor Tech Expert