Docker Tutorial

• Docker Tutorial
• Docker Architecture

Docker Installation

• Ubuntu Docker Installation
• Debian Docker Installation
• CentOS Docker Installation
• Windows Docker Installation
• MacOS Docker Installation

How to use Docker

• Docker Hello World
• Docker Container
• Docker Image
• Docker Container Connection
• Docker Rpository
• Docker Dockerfile
• Docker Compose
• Docker Machine
• Docker Swarm

Docker Instance

• Docker install Ubuntu
• Docker install CentOS
• Docker install Nginx
• Docker install Node.js
• Docker install PHP
• Docker install MySQL
• Docker install Tomcat
• Docker install Python
• Docker install Redis
• Docker install MongoDB
• Docker install Apache

Docker Container Lifecycle Command

• Docker run command
• Docker start/stop/restart commands
• Docker kill command
• Docker rm command
• Docker pause/unpause command
• Docker create command
• Docker exec command

Docker Container Operation Command

• Docker ps command
• Docker inspect command
• Docker top command
• Docker attach command
• Docker events command
• Docker logs command
• Docker wait command
• Docker export command
• Docker port command

Docker Container rootfs Command

• Docker commit command
• Docker cp command
• Docker diff command

Docker Mirror Repository Command

• Docker login/logout command
• Docker pull command
• Docker push command
• Docker search command

Docker Local Image Management Command

• Docker images command
• Docker rmi command
• Docker tag command
• Docker build command
• Docker history command
• Docker save command
• Docker load command
• Docker import command

Docker info|version Command

• Docker info command
• Docker version command

Docker start/stop/restart commands

Docker provides commands to manage the lifecycle of containers, including starting, stopping, and restarting them. In this tutorial, we'll cover the basics of using the docker start, docker stop, and docker restart commands.

• Docker Start:

The docker start command is used to start an existing but stopped container.

Syntax:

docker start [OPTIONS] CONTAINER [CONTAINER...]

• OPTIONS: Additional options that can be used with the docker start command.
• CONTAINER: The name or ID of one or more containers you want to start.

Common option:

• -a or --attach: Attach the container's standard input, output, and error streams.

Example:

Start a stopped container:

docker start my_container

Replace my_container with the name or ID of the container you want to start.

• Docker Stop:

The docker stop command is used to stop a running container.

Syntax:

docker stop [OPTIONS] CONTAINER [CONTAINER...]

• OPTIONS: Additional options that can be used with the docker stop command.
• CONTAINER: The name or ID of one or more containers you want to stop.

Common option:

• -t or --time: Specify a grace period (in seconds) for the container to stop before it is forcefully killed.

Example:

Stop a running container:

docker stop my_container

Replace my_container with the name or ID of the container you want to stop.

• Docker Restart:

The docker restart command is used to restart a container, which stops the container and then starts it again.

Syntax:

docker restart [OPTIONS] CONTAINER [CONTAINER...]

• OPTIONS: Additional options that can be used with the docker restart command.
• CONTAINER: The name or ID of one or more containers you want to restart.

Common option:

• -t or --time: Specify a grace period (in seconds) for the container to stop before it is forcefully killed.

Example:

Restart a container:

docker restart my_container

Replace my_container with the name or ID of the container you want to restart.

These commands help you manage the lifecycle of your containers, allowing you to start, stop, and restart them as needed.

1. How to Use Docker start Command:

   • Description: The docker start command is used to start stopped Docker containers.

   • Code Example:

     docker start container_id
     

2. Starting Docker Containers with start:

   • Description: docker start resumes the execution of a stopped container.

   • Code Example:

     docker start my_container
     

3. Docker start Command Options and Flags:

   • Description: docker start has options and flags for configuring container startup.

   • Code Example:

     docker start --attach --interactive my_container
     

4. Starting Multiple Containers with Docker start:

   • Description: Start multiple containers in one command.

   • Code Example:

     docker start container1 container2
     

5. How to Use Docker stop Command:

   • Description: The docker stop command is used to gracefully stop running Docker containers.

   • Code Example:

     docker stop container_id
     

6. Stopping Docker Containers with stop:

   • Description: docker stop sends a signal to the container's main process, allowing it to perform a graceful shutdown.

   • Code Example:

     docker stop my_container
     

7. Docker stop Command Options and Flags:

   • Description: docker stop has options and flags for customizing the stop process.

   • Code Example:

     docker stop --time=30 my_container
     

8. Stopping Multiple Containers with Docker stop:

   • Description: Stop multiple containers in one command.

   • Code Example:

     docker stop container1 container2
     

9. How to Use Docker restart Command:

   • Description: The docker restart command is used to restart stopped or running containers.

   • Code Example:

     docker restart container_id
     

10. Restarting Docker Containers with restart:

    • Description: docker restart stops and then starts the specified container.

    • Code Example:

      docker restart my_container
      

11. Docker restart Command Options and Flags:

    • Description: docker restart has options and flags for customizing the restart process.

    • Code Example:

      docker restart --time=10 my_container
      

12. Restart Policies in Docker-compose:

    • Description: Docker Compose allows defining restart policies for containers in the docker-compose.yml file.

    • Code Example (docker-compose.yml):

      version: '3'
      services:
        my_service:
          image: my_image
          restart: always