Heroku provides two ways for you to deploy your app with Docker: Container Registry allows you to deploy pre-built Docker images to Heroku. Build your Docker images with heroku.yml for deployment to Heroku. Container Registry & Runtime (Docker Deploys) Local Development with Docker Compose. Building Docker Images with heroku.yml. Docker Container Platform for Windows articles and blog posts on the Docker website. Install Docker Desktop on Windows. Double-click Docker Desktop Installer.exe to run the installer. If you haven’t already downloaded the installer (Docker Desktop Installer.exe), you can get it from Docker Hub. For Ubuntu 16.04 we will install the linux-image-extra-. kernel packages as well. Add Docker Source. Next, to download and install Docker on Ubuntu Linux, you need to add Docker repository and a key to access it. Add the GPG key using the following command: Then, add the Docker repository for Ubuntu 16.04. Install and run Docker Desktop on Mac 🔗. Double-click Docker.dmg to open the installer, then drag the Docker icon to the Applications folder. Double-click Docker.app in the Applications folder to start Docker. In the example below, the Applications folder is in “grid” view mode. The Docker menu displays the Docker Subscription Service.
Install an application
This command is deprecated.
It may be removed in a future Docker version. For more information, see the Docker Roadmap.
Install an application.By default, the application definition in the current directory will beinstalled. The APP_NAME can also be:
For example uses of this command, refer to the examples section below.
|Use a YAML file containing a credential set or a credential set present in the credential store|
|Use HTTP instead of HTTPS when pulling from/pushing to those registries|
|Kubernetes namespace to install into|
|Installation name (defaults to application name)|
|Orchestrator to install on (swarm, kubernetes)|
|Override parameters file|
|Pull the bundle|
|Override parameter value|
|Context on which the application is installed (default: <current-context>)|
|Sends registry auth|
$ docker app install myapp.dockerapp --name myinstallation --target-context=mycontext$ docker app install myrepo/myapp:mytag --name myinstallation --target-context=mycontext$ docker app install bundle.json --name myinstallation --credential-set=mycredentials.yml
|docker app||Docker Application|
|docker app bundle||Create a CNAB invocation image and |
|docker app completion||Generates completion scripts for the specified shell (bash or zsh)|
|docker app init||Initialize Docker Application definition|
|docker app inspect||Shows metadata, parameters and a summary of the Compose file for a given application|
|docker app install||Install an application|
|docker app list||List the installations and their last known installation result|
|docker app pull||Pull an application package from a registry|
|docker app push||Push an application package to a registry|
|docker app render||Render the Compose file for an Application Package|
|docker app status||Get the installation status of an application|
|docker app uninstall||Uninstall an application|
|docker app upgrade||Upgrade an installed application|
|docker app validate||Checks the rendered application is syntactically correct|
|docker app version||Print version information|
Docker is a technology that allows users to provide each application with its own isolated operating Linux environment, isolating compatibility or coexistence conflicts with other applications.If you want more information on docker and its underlying technology than is provided in this guide then you should visit the docker web site. There is also a Docker FAQ in the Unraid forums that covers many commonly asked questions.
Using Docker Unraid can run any Linux application regardless of the distribution format as long as it is available as a Docker container. That means whether an app was written for Ubuntu, CentOS, Arch, Red Hat, or any other variant, Unraid can run it. This is accomplished through the use of Docker Containers, which allows each application to be provided with its own isolated operating environment in which it cannot create software compatibility or coexistence conflicts with other applications. This also means that the application is isolated from the hosting Unraid system so that it is not affected by new releases of Unraid, and conversely, it will not install software components into Unraid that might lead to system instability
NOTE: Applications are made available and supported by both the Docker and Unraid user communities respectively.
By default, you will have access to any and all applications that Lime Technology publishes to its public Docker repository. To add them to your system, perform the following steps:
This method is now deprecated and the recommended way to add all containers is via Community Applications
To gain access to a wider set of applications, see this post in the Lime Technology forums for information on installing the Community Applications plugin. This plugin will allow you to add more applications to your system through an app store interface.
NOTE: The applications available on this store come in multiple forms (containers and plugins) and are not directly supported by Lime Technology. Support for community-maintained Docker containers can be found in the Docker Containers subforum.
If the Bridge type is selected, the application’s network access will be restricted to only communicating on the ports specified in the port mappings section. If the Host type is selected, the application will be given access to communicate using any port on the host that isn't already mapped to another in-use application/service. Generally speaking, it is recommended to leave this setting to its default value as specified per application template.
Applications can be given read and write access to files on the host by mapping a directory path from the container to a directory path on the host.
When looking at the volume mappings section
Clicking on the Edit button brings up a dialog allowing you to alter a volume mapping. Clicking inside the resulting fields provides a “picker” that will let you navigate to where the mapping should point.
For applications that are installed via Community Applications (i.e. the Apps tab) then you are typically provided with many of the settings for a particular container pre-set to sensible values. You should review these as being what you actually want on your system. Additional mappings can be manually created by clicking the Add another Path, Port, Variable, Label or Device option.
Note that this means that the path to any particular file/folder can be different when viewed from insides the container to that when viewed from the host level.
All applications should require at least one volume mapping to store application metadata (e.g., media libraries, application settings, user profile data, etc.). The expectation is that all dynamic data will be configured to exist outside the container (although docker does no make this mandatory) so that the docker image file ends up only containing all the binaries associated with the docker container and none of the variable data.
Most applications will need you to specify additional mappings in order for the application to interact with other data on the system (e.g., with Plex Media Server, you should specify an additional mapping to give it access to your media files). It is important that when naming Container volumes that you specify a path that won’t conflict with already existing folders present in the container. If unfamiliar with Linux, using a prefix such as “unraid_” for the volume name is a safe bet (e.g., “/unraid_media” is a valid Container volume name).
Special points to note when setting up volume mappings are:
Host paths mentioned in a container's volume mappings are created when the container starts if they do not already exist. If you find that you get unexpected folders appearing at the Unraid level then this can be a good indication that you have got a container mapping wrong and so the folder gets recreated every time the container is run.
While applications may internally be configured to talk to a specific port by default, we can remap those to different ports on our host with Docker.
When the network type is set to Bridge, you will be given the option of customizing what ports the container will use. This means that while three different apps may all want to use port 8000 internally, we can map each app to a unique port at the host level (e.g., 8000, 8001, and 8002).
When the network type is set to Host, the container will be allowed to use any available port on your system. In this case, it is up to you to make sure that you are not trying to run two containers using the same port as they would then interfere with each other.
Additional Port mappings can be created, similar to Volume mappings, although this is not typically necessary when working with containers using templates provided through Community Applications as port mappings expected by the container should already be specified.
IMPORTANT NOTE: If adjusting port mappings, do not modify the settings for the Container port as only the Host port can be adjusted.
With your network, volume and port mappings and environment variables configured, you are now ready to create your first Docker container. Click the Create button and the download process will begin. A few things worth noting while the image is downloading:
On the Docker page, you can set the Auto-Start option to ON for any docker container you want to always be started whenever the Array is started.
The default behavior when starting up the Docker sub-system is to simply attempt to start all the Docker containers that are listed on the Docker tab to be auto-started as fast as possible in the order they are listed.
There are times when the order in which containers are started and their timing with relation to other containers becomes important.
Example cases that spring to mind are:
You can alter the container start-up behavior from the default in the following ways:
Using these mechanisms should allow you to control the container startup process to achieve the results that you want.
Once the download is complete, the application is started automatically. To interact with your application, we begin by clicking on the icon visible on the Docker page of the unRAID web interface or on the icon for the docker on the dashboard page. Doing so will make a context menu appear with multiple options:
One of the first things you will do after your application is running will be to configure it. Configuration typically will involve specifying storage locations from within the application's web interface. When doing so, remember to look for the volume mappings you defined when adding your container. For example, if I needed to specify a folder path in the BT Sync app that would point to my Media share, I would specify the path of “/unraid_media” in the application's interface, as depicted below.
If for any reason your docker image file gets corrupted it is easy to recreate it from scratch. The commonest cause for this seems to be the case where the docker image file is located on the cache and the cache runs out of free space. Probably the next most common cause is when an unclean shutdown has occurred for some reason.
Since a properly set up docker container stores all its variable data externally to the docker image. The docker image file should only hold the binaries for the container so it is easy to get back to the last working state with the applications in the same state they were before the problem occurred.
The steps to recreate the docker image file are:
At his point, you will probably want to re-install your applications with the same settings as previously used. This is easily achieved as described below.
Every time an application is installed as a docker container then a template with the settings used is stored on the flash drive. this template will be updated any time you edit the settings for this container.
If you ever need to re-install an application (perhaps after deleting the docker.img file) with the same settings as you used previously then this can be done by:
Normally Docker does not allow Docker containers to directly access the same subnet as the one used by the host. You can allow this under Settings->Docker by changing Host access to custom networks from disabled to enabled.
A number of users have requested a way to start and/or stop their docker containers on a specified schedule. This is not currently a standard feature of Unraid but is easy to achieve using the User Scripts plugin.
The basic process is:
Command to start a docker
In most cases this is the simply a command of the form:
where container-name is the name you gave the container on the Docker tab. This starts an existing docker container that you have previously set up.
You can also see the container-name in the docker run command that unRaid uses to both create a container (if it does not exist) and also start it with the parameters provided via the docker template for that container. The container-name is that provided via the name parameter to the docker run command. You can see what the docker run command that unRaid will use when you install / edit the application (you can always make any change and then change it back and hit Apply to get the docker run command to appear). The following is an example of what this might look like:
Command to stop a docker
This is the simply a command of the form:
where container-name is the name you gave the container on the Docker tab.
Using Docker containers to run applications on Unraid is incredibly easy and very powerful. Here are some additional tips to improve your experience: