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Docker Desktop for Mac provides several networking features to make iteasier to use.
When the Docker Desktop application starts, it copies the /.docker/certs.d folder on your Mac to the /etc/docker/certs.d directory on Moby (the Docker Desktop xhyve virtual machine). You need to restart Docker Desktop after making any changes to the keychain or to the /.docker/certs.d directory in order for the changes to take effect. The Docker daemon pulled the 'hello-world' image from the Docker Hub. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. The Docker daemon streamed that output to the Docker. It is not correct because it does not work when the software requires instead the file /etc/timezone to be set. That way you are using leaves it as the default value etc/UTC. I have determined that actually there is no foolproof elegant way to set the time zone inside of a docker container. So have finally settled on this solution: App dockerfile.
FeaturesVPN Passthrough
Docker Desktop for Mac’s networking can work when attached to a VPN. To do this,Docker Desktop for Mac intercepts traffic from the containers and injects it intoMac as if it originated from the Docker application.
Port Mapping
When you run a container with the
-p argument, for example:
Docker Desktop for Mac makes whatever is running on port 80 in the container (inthis case,
nginx ) available on port 80 of localhost . Writing editor app mac. In this example, thehost and container ports are the same. What if you need to specify a differenthost port? If, for example, you already have something running on port 80 ofyour host machine, you can connect the container to a different port:
Now, connections to
localhost:8000 are sent to port 80 in the container. Thesyntax for -p is HOST_PORT:CLIENT_PORT .
HTTP/HTTPS Proxy Support
See Proxies.
Known limitations, use cases, and workarounds
Following is a summary of current limitations on the Docker Desktop for Macnetworking stack, along with some ideas for workarounds.
![]() There is no docker0 bridge on macOS
Because of the way networking is implemented in Docker Desktop for Mac, you cannot see a
docker0 interface on the host. This interface is actually within the virtualmachine.
I cannot ping my containers
Docker Desktop for Mac can’t route traffic to containers.
Per-container IP addressing is not possible
The docker (Linux) bridge network is not reachable from the macOS host.
Use cases and workarounds
There are two scenarios that the above limitations affect:
I want to connect from a container to a service on the host
The host has a changing IP address (or none if you have no network access). We recommend that you connect to the special DNS name
host.docker.internal which resolves to the internal IP address used by thehost. This is for development purpose and will not work in a production environment outside of Docker Desktop for Mac.
You can also reach the gateway using
gateway.docker.internal .
If you have installed Python on your machine, use the following instructions as an example to connect from a container to a service on the host:
I want to connect to a container from the Mac
Port forwarding works for
localhost ; --publish , -p , or -P all work.Ports exposed from Linux are forwarded to the host.
Install alexa app on mac. Our current recommendation is to publish a port, or to connect from anothercontainer. This is what you need to do even on Linux if the container is on anoverlay network, not a bridge network, as these are not routed.
The command to run the
nginx webserver shown in Getting Startedis an example of this.
To clarify the syntax, the following two commands both expose port
80 on thecontainer to port 8000 on the host:
To expose all ports, use the
-P flag. For example, the following commandstarts a container (in detached mode) and the -P exposes all ports on thecontainer to random ports on the host.
See the run command for more details onpublish options used with mac, networking
docker run .
Docker is the most popular among a collection of tools that provide containerization.Containerization allows one to run a server in its own isolated environment without the overhead of running a full virtual machine.
This page is structured as follows:
# Why Docker?
There are several reasons one would want to run openHAB in a Docker container.These include:
However, this flexibility comes at a cost.For example, because openHAB is running in its own container with only enough installed to run openHAB, the Exec binding is very likely to be useless to you because the container will not have access to the programs and files you need.
# About the openHAB installed in the Image
Inside the Docker Image, openHAB is installed to
/openhab .The install is a manual installation so all of the files are located here.This is also set as the home directory of the openhab user.
The Image has a very minimal installation of Linux with no services running and just enough installed to allow openHAB to run.
At the time of this writing, the official image uses the latest snapshot version of openHAB 2.
# Installation through Docker# Obtaining the Official image from DockerHub
Docker Hub has the basic information necessary to acquire and run the Docker image.Please review those instructions before continuing to select the correct image for your machine and download the image.
# Create the openhab user
Just because one is running in an isolated container does not mean running as root is recommended.So first create an
openhab user configured to be a system user with no home and no shell.This can be done on Ubuntu and Raspbian with the command:
Add your regular user to the
openhab group.
# Create the openHAB conf, userdata, and addon directories
These directories will be mounted into the running Docker container and are where the configurations and persistence data will be stored.Note that the software running inside a Docker container cannot follow the symbolic links located in a mounted volume.Make sure the
openhab user owns these directories.
# Running the Container as a Service Managed by Docker
Note, always review the README on Docker Hub for the most up to date set of recommended arguments and environment variables.Services can be run an maintained on a Linux machine one of two ways, using Docker or using the system's built in service management (e.g. systemd).If using docker to manage the service, run the following command:
Where
It is important that the ID number is passed in.The ID for the
openhab user inside the container will not match the ID of the user on your host system and file permissions may be a bit odd (e.g. why does www-data own my openHAB config files?).
See below for an explanation of the fields passed to Docker and potential additional fields.
Once it successfully runs (it should be listed with a CREATED time that does not include 'restarting' when running
docker ps ):
To change the runtime parameters stop the container then execute the long command above with the new parameters.
# Running the Container as a Service Controlled by Systemd
Note, always review the README on Docker Hub for the most up to date set of recommended arguments and environment variables.If running on a Systemd based Linux distro (Ubuntu 16.04 to be specific).The following openhab2.service file will start a new openHAB 2 container every time it starts the service and destroy that container when the service stops.What that means is any data that you want to preserve between restarts of openHAB 2 (e.g. configuration, databases, etc.) must be mounted from your host file system into the container.
Creating a new container on every run greatly simplifies the upgrade and update process.It also ensures that you start with a fresh install every time you run which can avoid some problems.
Where
<uid> is the user ID number for the openhab user which you can obtain using the command id openhab , <version> is the version of openHAB and <distribution> is the base system (debian or alpine).It is important that the ID number is passed in.The ID for the openhab user inside the container will not match the ID of the user on your host system and file permissions may be a bit odd (e.g. why does www-data own my openHAB config files?).
Place this openhab2.service file into
/etc/systemd/system .
Then run
sudo systemctl enable openhab2.service .
Finally run
sudo systemctl start openhab2.service to start openHAB running.
# Explanation of Arguments Passed to Docker
Note, always review the README on Docker Hub for the most up to date set of recommended arguments and environment variables.
# Environment Variables
Hab Pkg Export Web App Not Working Docker Mac Os
By default the openHAB user in the container is running with:
# Updating the Image
Stop the container:
docker stop openhab or sudo systemctl stop openhab
Delete the container:
Tinder app for mac.
docker rm openhab
![]() Hab Pkg Export Web App Not Working Docker Mac Install
Pull down the latest image:
where
<version> is the version of openHAB and <distribution> is the base system (debian or alpine).
Restart the container using the full command above.
The Docker image will automatically perform an upgrade on your mapped in userdata folder whenever it detects that your userdata version and the image's version differ.It determines the versions are different by comparing userdata/etc/version.properties.Any changes between the two files will trigger and upgrade.
The upgrade process first creates a backup of the entire mapped in userdata folder (skipping the backup folder) and places it as a dated tar file into userdata/backup.It then performs all the same steps that the upgrade script and which are performed by an apt-get/yum upgrade.
# Troubleshooting# USB sticks
If you want use an USB stick (for example for Z-Wave network), then it will be not available for the dockerized system by default.In Docker openHAB is running in name of
openhab , a restricted user.The stick will work if you run the following command right after docker image is started.
Hab Pkg Export Web App Not Working Docker Macbook
This command changes permissions of the specific device as expected (readable and writable for everyone).
Note
The device path (
/dev/ttyACM0 ) or container name (openhab ) could be different in your system, command can be modified accordingly.
Caught a mistake or want to contribute to the documentation? Edit this page on GitHub
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