docker-documentation/FAQ.md

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# FAQ
Here will some Frequently Asked Questions reside
## My host is incompatible with images based on Ubuntu Focal and Alpine 3.13 and later {#libseccomp}
This only affects 32 bit installs of distros based on Debian Buster.
This is due to a bug in the libseccomp2 library (dependency of Docker itself), which is fixed. However it's not pushed to all the repositories.
[A GitHub issue tracking this](https://github.com/moby/moby/issues/40734)
You have a few options as noted below. Options 1 is short-term, while option 2 is considered the best option if you don't plan to reinstall the device (option 3).
### Resolution
If you decide to do option 1 or 2, you should just need to restart the container after confirming you have libseccomp2.4.4 installed.
If 1 or 2 did not work, ensure your Docker install is at least version 20.10.0, [refer to the official Docker docs for installation.](https://docs.docker.com/engine/install/debian/)
#### Option 1
Manually install an updated version of the library with dpkg.
```bash
wget http://ftp.us.debian.org/debian/pool/main/libs/libseccomp/libseccomp2_2.4.4-1~bpo10+1_armhf.deb
sudo dpkg -i libseccomp2_2.4.4-1~bpo10+1_armhf.deb
```
{% hint style="info" %}
This url may have been updated. Find the latest by browsing [here](http://ftp.us.debian.org/debian/pool/main/libs/libseccomp/).
{% endhint %}
#### Option 2
Add the backports repo for DebianBuster. As seen [here](https://github.com/linuxserver/docker-jellyfin/issues/71#issuecomment-733621693).
```bash
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 04EE7237B7D453EC 648ACFD622F3D138
echo "deb http://deb.debian.org/debian buster-backports main" | sudo tee -a /etc/apt/sources.list.d/buster-backports.list
sudo apt update
sudo apt install -t buster-backports libseccomp2
```
#### Option 3
Reinstall/update your OS to a version that still gets updates.
* Any distro based on DebianStretch does not seem to have this package available
* DebianBuster based distros can get the package trough backports, as outlined in point 2.
{% hint style="info" %}
RaspberryPI OS (formerly Raspbian) Can be upgraded to run with a 64bit kernel
{% endhint %}
### Symptoms
* 502 errors in __Jellyfin__ as seen in [linuxserver/docker-jellyfin#71](https://github.com/linuxserver/docker-jellyfin/issues/71)
* `Error starting framework core` messages in the docker log for __Plex__. [linuxserver/docker-plex#247](https://github.com/linuxserver/docker-plex/issues/247)
* No WebUI for __Radarr__, even though the container is running. [linuxserver/docker-radarr#118](https://github.com/linuxserver/docker-radarr/issues/118)
* Images based on our Nginx base-image(Nextcloud, SWAG, Nginx, etc.) fails to generate a certificate, with a message similar to `error getting time:crypto/asn1/a_time.c:330`
* `docker exec <container-name> date` returns 1970
## I want to reverse proxy a application which defaults to https with a selfsigned certificate {#strict-proxy}
### Traefik {#strict-proxy-traefik}
In this example we will configure a serverTransport rule we can apply to a service, as well as telling Traefik to use https on the backend for the service.
Create a [ServerTransport](https://doc.traefik.io/traefik/routing/services/#serverstransport_1) in your dynamic Traefik configuration, we are calling ours `ignorecert`.
```yml
http:
serversTransports:
ignorecert:
insecureSkipVerify: true
```
Then on our `foo` service we tell it to use this rule, as well as telling Traefik the backend is running on https.
```yml
- traefik.http.services.foo.loadbalancer.serverstransport=ignorecert
- traefik.http.services.foo.loadbalancer.server.scheme=https
```