Docker

Installation

sudo apt update
sudo apt dist-upgrade -y
sudo apt install ca-certificates curl -y
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt update
sudo apt dist-upgrade -y

sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-doc -y

Setup

sudo groupadd docker
sudo usermod -aG docker $USER

Hello World

docker run hello-world

Visual Studio Code

Requirements

• Extensions (Ctrl+Shift+X | File Preferences Extensions)
  • ms-azuretools.vscode-containers
  • ms-azuretools.vscode-docker
  • ms-vscode-remote.remote-containers

Container Tools

• Container Tools extension menu in the primary side bar (Ctrl+B) makes it easy to build, manage, an deploy containers
• Container Explorer facilitates the management of container assets (containers, images, volumes, networks)

See more information on Containers in Visual Studio Code.

Developing inside a Container

Source: https://code.visualstudio.com/docs/devcontainers/containers

• Setup a devcontainer.json dev container configuration file for your project, either located under .devcontainer/devcontainer.json or as a .devcontainer.json file (note the dot-prefix) in the project root
• Use the command (Ctrl+Shift+P >dev containers reopen) Dev Containers: Reopen in Container to connect with Visual Studio Code and start developing within the container

Example

docker-compose.yml

services:
  ubuntu24:
    image: ubuntu:24.04
    container_name: ubuntu24
    volumes:
      - ./shared_data:/home/ubuntu/shared_data
    tty: true

• Create a container based on the image from Ubuntu 24.04 LTS
• Link the folder shared_data present in your project's root directory to the folder /home/ubuntu/shared_data inside the container

.devcontainer/devcontainer.json

// For format details, see https://aka.ms/devcontainer.json. For config options, see the
// README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-docker-compose
{
    // Name for the dev container. This is displayed in the VS Code UI.
    "name": "Example Dev Containers with Docker Compose",
    // Update the 'dockerComposeFile' list if you have more compose files or use different names
    "dockerComposeFile": [
        "../docker-compose.yml"
    ],
    // The 'service' property is the name of the service for the container that VS Code should use from the compose files.
    // Update this value and .devcontainer/docker-compose.yml to the real service name
    "service": "ubuntu24",
    // The optional 'workspaceFolder' property is the path VS Code should open by default when connected.
    // This is typically a file mount in .devcontainer/docker-compose.yml
    "workspaceFolder": "/home/ubuntu/shared_data/",
    // Features to add to the dev container. More info: https://containers.dev/features.
    // "features": {},
    // Use 'forwardPorts' to make a list of ports inside the container available locally.
    // "forwardPorts": [],
    // Uncomment the next line if you want start specific services in your Docker Compose config.
    // "runServices": [],
    // Uncomment the next line if you want to keep your containers running after VS Code shuts down.
    "shutdownAction": "stopCompose",
    // Command string or list of command arguments to run on the **host machine** during initialization
    // "initializeCommand": [
    //  "echo 'Initializing the dev container...'",
    //  "echo 'This is a placeholder for any initialization commands you might want to run.'"
    // ],
    // Uncomment the next line to run commands after the container is created.
    // Subsequent commands execute **inside the container** immediately after it has started for the first time
    "postCreateCommand": "cat /etc/os-release",
    // Configure tool-specific properties.
    "customizations": {
        "vscode": {
            // Uncomment the next line to install VS Code extensions.
            "extensions": [
                "ms-vscode.cpptools-extension-pack",
                "ms-python.python",
                "ms-python.debugpy",
                "ms-python.vscode-pylance",
                "cschlosser.doxdocgen",
                "redhat.vscode-xml",
                "redhat.vscode-yaml",
                "tomoki1207.pdf"
            ]
            // Uncomment the next line to set a specific VS Code version.
            // "vscodeVersion": "1.60.0"
        }
    }
    // Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
    // "remoteUser": "devcontainer"
}

Warning

If you try to remove files inside the shared folder between container and host machine, the following error may appear: EACCES: permission denied. This error is due to the changes on the folder's privileges ($ ll). A solution is to remove the file with sudo, changing back the folder's privileges, among others.

See more information on Developing inside a Container in Visual Studio Code and Dev Container metadata reference.