### The big-sur image starts slowly after installation. Is this expected?
Automatic updates are still on in the container's settings. You may wish to turn them off. [We have future plans for development around this.](https://github.com/sickcodes/Docker-OSX/issues/227)
### What is `${DISPLAY:-:0.0}`?
`$DISPLAY` is the shell variable that refers to your X11 display server.
@ -279,11 +283,20 @@ The directory that we are letting the Docker container use is a X server display
If we let the Docker container use the same display socket as our own environment, then any applications you run inside the Docker container will show up on your screen too! [https://www.x.org/archive/X11R6.8.0/doc/RELNOTES5.html](https://www.x.org/archive/X11R6.8.0/doc/RELNOTES5.html)
### I have used Docker-OSX before and would like to reuse the same container (persistent disk)
### ALSA errors on startup or container creation
You may when initialising or booting into a container see errors from the `(qemu)` console of the following form:
`ALSA lib blahblahblah: (function name) returned error: no such file or directory`. These are more or less expected. As long as you are able to boot into the container and everything is working, no reason to worry about these.
See also: [here](https://github.com/sickcodes/Docker-OSX/issues/174).
### Start the same container later (persistent disk)
1. You can now pull the `.img` file out of the container, which is stored in `/var/lib/docker`, and supply it as a runtime argument to the `:naked` Docker image. See above.
Created a container with `docker run` and want to reuse the underlying image again later?
2. This is for when you want to run the SAME container again later.
See [container creation examples](https://github.com/sickcodes/Docker-OSX#container-creation-examples) for how to get to the point where this is applicable.
This is for when you want to run the SAME container again later. You may need to use `docker commit` to save your container before you can reuse it. Check if your container is persisted with `docker ps --all`.
If you don't run this you will have a new image every time.
@ -301,13 +314,9 @@ docker start -ai abc123xyz567
```
### I have used Docker-OSX before and would like to extract the Mac OSX image from my container
Use `docker commit`, copy the ID, and then run `docker start -ai <Replace this with your ID>`.
You can also pull the `.img` file out of the container, which is stored in `/var/lib/docker`, and supply it as a runtime argument to the `:naked` Docker image.
**Alternatively:**
[Extract the .img file](https://github.com/sickcodes/Docker-OSX#backup-the-disk-wheres-my-disk), and then use that [.img file with :naked](https://github.com/sickcodes/Docker-OSX#quick-start-own-image-naked-container-image)
See also: [here](https://github.com/sickcodes/Docker-OSX/issues/197).
### I have used Docker-OSX before and want to restart a container that starts automatically
@ -325,6 +334,8 @@ docker start -ai -i <Replace this with your ID>
You may see one or more libgtk-related errors if you do not have everything set up for hardware virtualisation yet. If you have not yet done so, check out the [initial setup](https://github.com/sickcodes/Docker-OSX#initial-setup) section and the [routine checks](https://github.com/sickcodes/Docker-OSX#routine-checks) section as you may have missed a setup step or may not have all the needed Docker dependencies ready to go.
See also: [here](https://github.com/sickcodes/Docker-OSX/issues/174).
#### Permissions denied error
If you have not yet set up xhost, try the following:
@ -349,7 +360,7 @@ xhost +
### RAM over-allocation
You cannot allocate more RAM than your machine has. The default is 3 Gigabytes: `-e RAM=3`.
If you are trying to allocate more RAM to the container than you currently have available, you may see an error like the following: `cannot set up guest memory 'pc.ram': Cannot allocate memory`.
If you are trying to allocate more RAM to the container than you currently have available, you may see an error like the following: `cannot set up guest memory 'pc.ram': Cannot allocate memory`. See also: [here](https://github.com/sickcodes/Docker-OSX/issues/188), [here](https://github.com/sickcodes/Docker-OSX/pull/189).
For example (below) the `buff/cache` already contains 20 Gigabytes of allocated RAM:
@ -442,6 +453,12 @@ Additionally, you can string multiple statements together, for example:
-p 10043:10043 \
```
### Bridged networking
You might not need to do anything with the default setup to enable internet connectivity from inside the container. Additionally, `curl` may work even if `ping` doesn't.
See discussion [here](https://github.com/sickcodes/Docker-OSX/issues/177) and [here](https://github.com/sickcodes/Docker-OSX/issues/72) and [here](https://github.com/sickcodes/Docker-OSX/issues/88).
### Enable IPv4 forwarding for bridged network connections for remote installations
This is not required for LOCAL installations.
@ -764,7 +781,14 @@ Or tell the container to use specific ones using `-e GENERATE_SPECIFIC=true`
kaoudis
4 years ago