docker-ce VS Docker Compose

Yes, Kubernetes, in fact, relies on a number of other free and open source software packages. As a base, it relies on the Docker container runtime and the CoreOS Linux distribution, and it utilizes other open source projects for a number of its components, such as etcd for distributed key-value storage. The tool's core and control plane are both built in GO programming language, making it a completely Go-based application. Kubernetes itself is an open source project and has been used as a building block for other open source projects.

Container images become containers at runtime and in the case of Docker containers - images become containers when they run on Docker Engine.

So I'm surprisingly ignorant on this but I'm curious if the full docker command line tool for linux is free and open source. It seems like https://github.com/docker/docker-ce is free and open source, but it's unclear to me if the docker community edition has other components which are not free and open source since this repository is deprecated. If the base verion is free and open source, why don't open source projects just re-implement equivalents of all of the other tools docker is providing at cost, to create a full free and open source suite?

apt show docker.io Package: docker.io Version: 20.10.7-0ubuntu1~20.04.1 Built-Using: glibc (= 2.31-0ubuntu9), golang-1.13 (= 1.13.8-1ubuntu1) Priority: optional Section: universe/admin Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Paul Tagliamonte [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 193 MB Depends: adduser, containerd (>= 1.2.6-0ubuntu1~), iptables, debconf (>= 0.5) | debconf-2.0, libc6 (>= 2.8), libdevmapper1.02.1 (>= 2:1.02.97), libsystemd0 (>= 209~) Recommends: ca-certificates, git, pigz, ubuntu-fan, xz-utils, apparmor Suggests: aufs-tools, btrfs-progs, cgroupfs-mount | cgroup-lite, debootstrap, docker-doc, rinse, zfs-fuse | zfsutils Breaks: docker (<< 1.5~) Replaces: docker (<< 1.5~) Homepage: https://www.docker.com/community-edition Download-Size: 36.9 MB APT-Sources: https://mirror.asergo.com/ubuntu focal-updates/universe amd64 Packages Description: Linux container runtime Docker complements kernel namespacing with a high-level API which operates at the process level. It runs unix processes with strong guarantees of isolation and repeatability across servers.

Well, Docker CE comes with a huge Disclaimer of Warranty (https://github.com/docker/docker-ce/blob/master/LICENSE). I don't think we can complain. "I should have tested it before deploying to production" it's the right thing to say.

Not sure what you mean by "Go++" that's not really a thing. Docker's engine and tooling is primarily written in Go. You can see a copy of an older version of docker easily at https://github.com/docker/docker-ce/tree/master/components/. A number of other devops tools are written in Go, as are a number of microservices out in the wild.

#!/bin/bash # Update the system sudo apt-get update -y sudo apt-get upgrade -y # Install Git sudo apt-get install -y git # Install Docker sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null sudo apt-get update -y sudo apt-get install -y docker-ce docker-ce-cli containerd.io # Add the 'ubuntu' and 'ssm-user' to the Docker group sudo usermod -aG docker ubuntu sudo usermod -aG docker ssm-user id ubuntu ssm-user sudo newgrp docker # Enable and start Docker sudo systemctl enable docker.service sudo systemctl start docker.service # Install Docker Compose v2 sudo mkdir -p /usr/local/lib/docker/cli-plugins sudo curl -SL https://github.com/docker/compose/releases/download/v2.23.3/docker-compose-linux-x86_64 -o /usr/local/lib/docker/cli-plugins/docker-compose sudo chmod +x /usr/local/lib/docker/cli-plugins/docker-compose # Add swap space sudo dd if=/dev/zero of=/swapfile bs=128M count=32 sudo chmod 600 /swapfile sudo mkswap /swapfile sudo swapon /swapfile echo "/swapfile swap swap defaults 0 0" | sudo tee -a /etc/fstab

--- - name: Run update ansible.builtin.apt: name: aptitude state: latest update_cache: true - name: Install dependencies ansible.builtin.apt: name: - net-tools - apt-transport-https - ca-certificates - curl - software-properties-common - python3-pip - virtualenv - python3-setuptools - gnupg-agent - autoconf - dpkg-dev - file - g++ - gcc - libc-dev - make - pkg-config - re2c - wget state: present update_cache: true - name: Add Docker GPG apt Key ansible.builtin.apt_key: url: https://download.docker.com/linux/ubuntu/gpg state: present - name: Add repository into sources list ansible.builtin.apt_repository: repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable state: present filename: docker - name: Install Docker ansible.builtin.apt: name: - docker-ce - docker-ce-cli state: present update_cache: true - name: Add non-root to docker group user: name: ubuntu groups: [docker] append: true - name: Install Docker module for Python ansible.builtin.pip: name: docker - name: Install Docker-Compose ansible.builtin.get_url: url: https://github.com/docker/compose/releases/download/1.29.2/docker-compose-Linux-x86_64 dest: /usr/local/bin/docker-compose mode: '755' - name: Create Docker-Compose symlink ansible.builtin.command: cmd: ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose creates: /usr/bin/docker-compose - name: Restart Docker ansible.builtin.service: name: docker state: restarted enabled: true

Docker Compose v2.30.0 has introduced lifecycle hooks, making it easier to manage actions tied to container start and stop events. This feature lets developers handle key tasks more flexibly while keeping applications clean and secure.

curl -SL https://github.com/docker/compose/releases/download/v2.23.0/docker-compose-linux-x86_64 -o $DOCKER_CONFIG/cli-plugins/docker-compose

sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose sudo chmod +x /usr/local/bin/docker-compose docker-compose version

Features: REST-like CQRS HTTP-API, Faceted Search, Full-text Search Interface: OpenAPI, JSON, JSON API, JSON Schema Query Languages: SQL dialect, Cypher, Gremlin, MQL, GraphQL Ingest Protocols: OAI-PMH, S3 Ingest Encoding: XML Ingest Formats: DataCite, DublinCore, MARC, MODS Deployment: Compose, Docker-Compose, Podman-Compose, K8s (via Kompose) Components: ArcadeDB, Connect, Lowdefy License: MIT

If you're using Docker Compose, you can view logs for multiple services at once.

But, this is not how images are used in production applications. Docker Compose is used to run and manage multiple docker images.

Docker Compose is an orchestration tool for single and multi-container Dockerized applications. It allows users to define and configure one or more services and their necessary options, volumes, and networks. Compose will then handle launch and orchestration of the application with the docker compose up command.

Docker Compose extends the idea of Docker by orchestrating multiple containers, allowing you to manage complex applications as easily as serving a dessert buffet.