Push & Pull Docker Images📥📤
Docker Push: "Docker push is a command used to upload Docker images from a local system to a remote registry, making them accessible to other users or systems. It allows developers to share their custom-built Docker images with teammates or deploy them to production environments."
docker push <image_name>:<tag>
Docker Pull: "Docker pull is a command used to download Docker images from a remote registry to a local system. It enables developers to fetch pre-built Docker images from public or private repositories, saving time and effort by providing access to a wide range of ready-to-use software components and dependencies."
docker pull <image_name>:<tag>
Docker-Volume🔊
Docker allows you o create something called volumes. Volumes are like separate storage areas that can be accessed by containers. They allow you to store data, like a database, outside the container, so it doesn't get deleted when the container is deleted. You can also mount from the same volume and create more containers having same data
# Creates a new Docker volume.
docker volume create <volume_name>
# Displays detailed information about a Docker volume.
docker volume inspect <volume_name>
Docker Network💻
Docker allows you to create virtual spaces called networks, where you can connect multiple containers (small packages that hold all the necessary files for a specific application to run) together. This way, the containers can communicate with each other and with the host machine (the computer on which the Docker is installed). When we run a container, it has its own storage space that is only accessible by that specific container. If we want to share that storage space with other containers
# Creates a new Docker network
docker network create <network_name>
# Displays detailed information about a Docker network.
docker network inspect <network_name>
# Lists all Docker networks on the host.
docker network ls
# Removes all unused Docker networks.
docker network prune
Docker Compose♻️
Docker Compose is a tool that was developed to help define and share multi-container applications.
With Compose, we can create a YAML file to define the services and with a single command, can spin everything up or tear it all down.
# Builds, (re)creates, starts, and attaches to containers for a service.
docker-compose up
# Executes a command in a running container.
docker-compose exec <service_name> <command>
# Pulls images for services defined in the docker-compose.yml file.
docker-compose pull
Docker Scout 🔨
Docker Scout is a tool designed to simplify the management and monitoring of Docker containers. It provides a user-friendly interface for visualizing and controlling Docker containers across multiple hosts. With Docker Scout, users can easily monitor container health, resource usage, and network activity. It also offers features for managing container lifecycle, such as starting, stopping, and restarting containers.
Docker Multistaging📝
Docker multistage builds are a feature that allows you to create more efficient Docker images by using multiple build stages within a single Dockerfile. This feature is particularly useful for reducing the size of your final Docker image and improving build times.
Here's a simple example of a Dockerfile with multistage builds:
# Build stage
FROM node:14 AS build
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm install
COPY . .
RUN npm run build
# Production stage
FROM nginx:alpine AS production
COPY --from=build /app/build /usr/share/nginx/html
EXPOSE 80
Docker serves as the cornerstone of modern software development, offering a seamless journey from local development to production deployment. With Docker, developers can effortlessly push and pull container images across networks, orchestrate complex multi-container applications using Docker Compose, and ensure the security and compliance of cloud environments with tools like Scout Suite.
So that it's, Thank you for Reading...🤝
Happy Learning...😄