Updated on July 27th, 2018 in Docker Tip #65: Get Your Docker Host's IP Address from in a Container Once in a while you may need your Docker host's IP address. Here's how to do it on Docker for Mac, Windows and Linux.
Doubleclick the generated docker-for-mac.ovpn in Finder (or run open docker-for-mac.ovpn in your terminal) to add it to Tunnelblick. In Tunnelblick, connect to your new docker-for-mac profile. You will now be able to access the internal Docker networks from macOS.
In I wrote about connecting to your Docker host from inside of a container but a lot of things have changed since then. Here’s a more updated version.
Docker for Mac / Docker for Windows As of Docker v18.03+ you can use the host.docker.internal hostname to connect to your Docker host. This could come in handy if you wanted to connect to a database that’s running on your host but isn’t running inside of a container. I often see this use case come up when people are beginning to move their stack over into using Docker.
If that’s the case you would just use host.docker.internal as your DB connection host. Docker for Linux There’s a couple of ways to do this, but the easiest way would be to connect over the IP address listed in your docker0 network adapter. If you ran ip a on your Docker host you might see something similar to this.
3: docker0: mtu 1500 link/ether 02:42:e8:a9:95:58 brd ff:ff:ff:ff:ff:ff inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0 validlft forever preferredlft forever Using the above output as an example, you could connect to your Docker host from inside of a container by using this IP address: 172.17.0.1. If you expect that IP address might change you could go the extra mile and do something like docker container run -e 'DOCKERHOST=$(ip -4 addr show docker0 grep -Po 'inet K d.+')'., this way every time you run your container, it’ll have the IP address available inside the container set to the DOCKERHOST environment variable.
![Docker For Mac Internal Docker For Mac Internal](/uploads/1/2/5/3/125394945/306641609.jpeg)
Docker for Mac Stable release notes Estimated reading time: 16 minutes Here are the main improvements and issues per stable release, starting with the current release. The documentation is updated for each release. For system requirements, see. Release notes for stable releases are listed below, are also available. (Following the CE release model, ‘beta’ releases are called ‘edge’ releases.) You can learn about both kinds of releases, and download stable and edge product installers at. Stable Releases of 2018 Docker Community Edition 18.03.0-ce-mac60 2018-03-30.
Bug fixes and minor changes. Fix Upgrade straight from 17.09 versions where Docker for Mac cannot restart once the upgrade has been perfomed. Fixes Docker Community Edition 18.03.0-ce-mac59 2018-03-26. Upgrades. Linux Kernel 4.9.87. AUFS 20180312.
New. VM Swap size can be changed in settings. See,. New menu item to restart Docker. Support NFS Volume sharing. The directory holding the disk images has been renamed (from /Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux to /Library/Containers/com.docker.docker/Data/vms/0`).
Bug fixes and minor changes. Fix daemon not starting properly when setting TLS-related options. Fixes. DNS name host.docker.internal shoud be used for host resolution from containers.
Older aliases (still valid) are deprecated in favor of this one. (See. Fix for the HTTP/S transparent proxy when using “localhost” names (e.g. Fix empty registry added by mistake in some cases in the Preference Daemon Pane. Fixes. Clearer error message when incompatible hardware is detected.
Fix some cases where selecting “Reset” after an error did not reset properly. Fix incorrect ntp config.
Fixes. Migration of Docker Toolbox images is not proposed anymore in Docker For Mac installer (still possible to ). Docker Community Edition 17.12.0-ce-mac55 2018-02-27. Bug fixes and minor changes. Revert the default disk format to qcow2 for users running macOS 10.13 (High Sierra). There are confirmed reports of file corruption using the raw format which uses sparse files on APFS.
Note this change only takes effect after a reset to factory defaults (from the Whale menu - Preferences - Reset). Related to. Fix VPNKit proxy for docker.for.mac.http.internal. Docker Community Edition 17.12.0-ce-mac49 2018-01-19. Bug fixes and minor changes. Fix error during resize/create Docker.raw disk image in some cases.
Fixes, docker/for-mac#2453, (. Fix additional allocated disk space not available in containers. Fixes. Vpnkit port max idle time default restored to 300s. Fixes. Fix using an HTTP proxy with authentication. Fixes.
Allow HTTP proxy excludes to be written as.docker.com as well as.docker.com. Allow individual IP addresses to be added to HTTP proxy excludes. Avoid hitting DNS timeouts when querying docker.for.mac. when the upstream DNS servers are slow or missing. Docker Community Edition 17.12.0-ce-mac47 2018-01-12. Bug fixes and minor changes.
Fix for docker push to an insecure registry. Fixes. Separate internal ports used to proxy HTTP and HTTPS content. Docker Community Edition 17.12.0-ce-mac46 2018-01-09.
Upgrades. Linux Kernel 4.9.60. New.
VM entirely built with Linuxkit. VM disk size can be changed in disk preferences. (See ). For systems running APFS on SSD on High Sierra, use raw format VM disks by default. This improves disk throughput (from 320MiB/sec to 600MiB/sec in dd on a 2015 MacBook Pro) and disk space handling. Existing disks are kept in qcow format, if you want to switch to raw format you need to “Remove all data” or “Reset to factory defaults”.
See. DNS name docker.for.mac.host.internal should be used instead of docker.for.mac.localhost (still valid) for host resolution from containers, since since there is an RFC banning the use of subdomains of localhost.
See. Bug fixes and minor changes.
Display various component versions in About box. Avoid VM reboot when changing host proxy settings. Don’t break HTTP traffic between containers by forwarding them via the external proxy. (See ). Filesharing settings are now stored in settings.json.
Daemon restart button has been moved to settings / Reset Tab. Better VM state handling & error messsages in case of VM crashes. Fix login into private repository with certificate issue. (See ) Stable Releases of 2017 Docker Community Edition 17.09.1-ce-mac42 2017-12-11.
Upgrades. Bug fixes and minor changes. Fix bug not allowing to move qcow disk in some cases.
Docker Community Edition 17.09.0-ce-mac35 2017-10-06. Bug fix. Fix Docker For Mac unable to start in some cases: removed use of libgmp sometimes causing the vpnkit process to die. Docker Community Edition 17.09.0-ce-mac33 2017-10-03. Bug fix.
Do not show Toolbox migration assistant when there are existing Docker For Mac data. Docker Community Edition 17.09.0-ce-mac32 2017-10-02. Upgrades.
Linux Kernel 4.9.49. AUFS 20170911. DataKit update (fix instability on High Sierra). New.
![Docker for mac Docker for mac](/uploads/1/2/5/3/125394945/977957082.png)
Add daemon options validation. VPNKit: add support for ping!. VPNKit: add slirp/port-max-idle-timeout to allow the timeout to be adjusted or even disabled. VPNKit: bridge mode is default everywhere now.
Transparent proxy using macOS system proxies (if defined) directly. GUI settings are now stored in /Library/Group Containers/group.com.docker/settings.json. Daemon.json in now a file in /.docker/. You can now change the default IP address used by Hyperkit if it collides with your network. Bug fixes and minor changes. Fix instability on High Sierra (docker/for-mac#2069, docker/for-mac#2062, docker/for-mac#2052, docker/for-mac#2029, docker/for-mac#2024).
Fix password encoding/decoding (docker/for-mac#2008, docker/for-mac#2016, docker/for-mac#1919, docker/for-mac#712, docker/for-mac#1220). Kernel: Enable TASKXACCT and TASKIOACCOUNTING (docker/for-mac#1608). Rotate logs in the VM more often. VPNKit: change protocol to support error messages reported back from the server. VPNKit: fix a bug which causes a socket to leak if the corresponding TCP connection is idle for more than 5 minutes (related to ). VPNKit: improve the logging around the Unix domain socket connections.
VPNKit: automatically trim whitespace from int or bool database keys. Diagnose can be cancelled & Improved help information. Fixes docker/for-mac#1134, docker/for-mac#1474. Support paging of docker-cloud repositories & orgs. Fixes docker/for-mac#1538 Docker Community Edition 17.06.2-ce-mac27 2017-09-06. Upgrades.
Docker Community Edition 17.06.1-ce-mac24, 2017-08-21 Upgrades. Linux Kernel 4.9.36.
AUFS 20170703 Bug fixes and minor changes. DNS Fixes. Fixes,. Avoid unnecessary VM reboot (when changing proxy exclude, but no proxy set). Fixes, Docker Community Edition 17.06.0-ce-mac18, 2017-06-28 Upgrades.
qcow-tool v0.10.0 (improve the performance of compact: mirage/ocaml-qcow#94). OSX Yosemite 10.10 is marked as deprecated. Linux Kernel 4.9.31 New. Integration with Docker Cloud: control remote Swarms from the local CLI and view your repositories. GUI Option to opt out of credential store. GUI option to reset Docker data without losing all settings (fixes ). Add an experimental DNS name for the host: docker.for.mac.localhost.
Support for client (i.e.