Oct 05, 2020 Installing Docker in Ubuntu 18.04 ^ To begin with, you will need to have Docker running on your system. This can be as simple as using Docker Desktop for Windows or Mac as an example, or you may have a Windows or Linux server you want to use to run Docker. For the purposes of this post, I am installing Docker on an Ubuntu 18.04 Server. Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 162 Server Version: 17.06.0-ce Storage Driver: aufs Root Dir: /var/lib/docker/aufs Backing Filesystem: extfs Dirs: 316 Dirperm1 Supported: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Log: awslogs fluentd gcplogs gelf. Prior to 8.7.0 and 6.11.4 the docker images overrode the default npm log level from warn to info. However due to improvements to npm and new Docker patterns (e.g. Multi-stage builds) the working group reached a consensus to revert the log level to npm defaults. If you need more verbose output, please use one of the following methods to change. May 24, 2016 Inside the specific docker I'm looking at, without any type of mapping, if I docker exec /bin/bash into it, I can navigate to /dev/bus/usb and find the same lists of devices. But for some reason, why I tell the docker to look at that path, it does not recognize the device. Install Compose on Linux systems. On Linux, you can download the Docker Compose binary from the Compose repository release page on GitHub.Follow the instructions from the link, which involve running the curl command in your terminal to download the binaries.
- 1Installation
- 4'WARNING: No {swap,memory} limit support'
Installation
The Docker package is in the 'Community' repository. See Alpine_Linux_package_management how to add a repository.
Connecting to the Docker daemon through its socket requires you to add yourself to the `docker` group.
To start the Docker daemon at boot, see Alpine_Linux_Init_System.
For more information, have a look at the corresponding Github issue.
Anyway, this weakening of security is not necessary to do with Alpine 3.4.x and Docker 1.12 as of August 2016 anymore.
Docker Compose
'docker-compose' is in 'Community' repository since Alpine Linux >= 3.10.
For older releases, do:
To install docker-compose, first install pip:
Isolate containers with a user namespace
and add in /etc/docker/daemon.json
You may also consider these options : '
You will find all possible configurations here[1].
Example: How to install docker from Arch
'WARNING: No {swap,memory} limit support'
You may, probably, encounter this message by executing docker info.To correct this situation we have to enable the cgroup_enable=memory swapaccount=1
Alpine 3.8
Well I'm not sure it wasn't the case before but for sure with Alpine 3.8 you must config cgroups properly
Warning: This seems not to work with Alpine 3.9 and Docker 18.06. Follow the instructions for grub or extlinux below instead.
Grub
Well; if you use Grub it is like any other linux and you just have to add the cgroup condition into /etc/default/grub, then upgrade your grub
Extlinux
With Extlinux you also add the cgroup condition but inside /etc/update-extlinux.conf
than update the config and reboot
update-extlinux
How to use docker
The best documentation for how to use Docker and create containers is at the main docker site. Adding anything more to it here would be redundant.
if you create an account at docker.com you can browse through other user's images and learn from the syntax in contributor's dockerfiles.
Official Docker image files are denoted by a blue ribon on the website.
See also
Estimated reading time: 7 minutes
You can run Compose on macOS, Windows, and 64-bit Linux.
Prerequisites
Docker Compose relies on Docker Engine for any meaningful work, so make sure youhave Docker Engine installed either locally or remote, depending on your setup.
On desktop systems like Docker Desktop for Mac and Windows, Docker Compose isincluded as part of those desktop installs.
On Linux systems, first install theDocker Enginefor your OS as described on the Get Docker page, then come back here forinstructions on installing Compose onLinux systems.
To run Compose as a non-root user, see Manage Docker as a non-root user.
Install Compose
Follow the instructions below to install Compose on Mac, Windows, Windows Server2016, or Linux systems, or find out about alternatives like using the pipPython package manager or installing Compose as a container.
Install a different version
The instructions below outline installation of the current stable release(v1.28.6) of Compose. To install a different version ofCompose, replace the given release number with the one that you want. Composereleases are also listed and available for direct download on theCompose repository release page on GitHub.To install a pre-release of Compose, refer to the install pre-release buildssection.
Install Compose on macOS
Docker Desktop for Mac includes Compose alongwith other Docker apps, so Mac users do not need to install Compose separately.For installation instructions, see Install Docker Desktop on Mac.
Install Compose on Windows desktop systems
Docker Desktop for Windows includes Composealong with other Docker apps, so most Windows users do not need toinstall Compose separately. For install instructions, see Install Docker Desktop on Windows.
If you are running the Docker daemon and client directly on MicrosoftWindows Server, follow the instructions in the Windows Server tab.
Install Compose on Windows Server
Follow these instructions if you are running the Docker daemon and client directlyon Microsoft Windows Server and want to install Docker Compose.
Start an “elevated” PowerShell (run it as administrator).Search for PowerShell, right-click, and chooseRun as administrator. When asked if you want to allow this appto make changes to your device, click Yes.
In PowerShell, since GitHub now requires TLS1.2, run the following:
Then run the following command to download the current stable release ofCompose (v1.28.6):
Note: On Windows Server 2019, you can add the Compose executable to $Env:ProgramFilesDocker. Because this directory is registered in the system PATH, you can run the docker-compose --version command on the subsequent step with no additional configuration.
Test the installation.
Install Compose on Linux systems
On Linux, you can download the Docker Compose binary from theCompose repository release page on GitHub.Follow the instructions from the link, which involve running the curl commandin your terminal to download the binaries. These step-by-step instructions arealso included below.
For alpine, the following dependency packages are needed:py-pip, python3-dev, libffi-dev, openssl-dev, gcc, libc-dev, rust, cargo and make.
Run this command to download the current stable release of Docker Compose:
To install a different version of Compose, substitute
1.28.6with the version of Compose you want to use.If you have problems installing with
curl, seeAlternative Install Options tab above.Apply executable permissions to the binary:
Note: If the command docker-compose fails after installation, check your path.You can also create a symbolic link to /usr/bin or any other directory in your path.
For example:
Optionally, install command completion for the
bashandzshshell.Test the installation.
Alternative install options
Install using pip
For alpine, the following dependency packages are needed:py-pip, python3-dev, libffi-dev, openssl-dev, gcc, libc-dev, rust, cargo, and make.
Compose can be installed frompypi using pip. If you installusing pip, we recommend that you use avirtualenv because many operatingsystems have python system packages that conflict with docker-composedependencies. See the virtualenvtutorial to getstarted.
If you are not using virtualenv,
pip version 6.0 or greater is required.
Install as a container
Compose can also be run inside a container, from a small bash script wrapper. Toinstall compose as a container run this command:
Install pre-release builds
If you’re interested in trying out a pre-release build, you can download releasecandidates from the Compose repository release page on GitHub.Follow the instructions from the link, which involves running the curl commandin your terminal to download the binaries.
Pre-releases built from the “master” branch are also available for download athttps://dl.bintray.com/docker-compose/master/.
Docker Python Oracle
Pre-release builds allow you to try out new features before they are released,but may be less stable.
Upgrading
If you’re upgrading from Compose 1.2 or earlier, remove ormigrate your existing containers after upgrading Compose. This is because, as ofversion 1.3, Compose uses Docker labels to keep track of containers, and yourcontainers need to be recreated to add the labels.
If Compose detects containers that were created without labels, it refusesto run, so that you don’t end up with two sets of them. If you want to keep usingyour existing containers (for example, because they have data volumes you wantto preserve), you can use Compose 1.5.x to migrate them with the followingcommand:
Docker Python Opencv
Alternatively, if you’re not worried about keeping them, you can remove them.Compose just creates new ones.
Uninstallation
To uninstall Docker Compose if you installed using curl:
Docker Python Onbuild
To uninstall Docker Compose if you installed using pip:
Got a “Permission denied” error?
If you get a “Permission denied” error using either of the abovemethods, you probably do not have the proper permissions to removedocker-compose. To force the removal, prepend sudo to either of the abovecommands and run again.
Where to go next
compose, orchestration, install, installation, docker, documentation