All oCIS services rely on /tmp to be a read-write filesystem because of govips

[wkloucek]

Describe the bug

Run oCIS 6.6 in Kubernetes, eg via owncloud/ocis-charts#778

Steps to reproduce

1. install it
2. look at the pods

Expected behavior

Pods are running

Actual behavior

Pods are crashing, eg:

+ nats-799bb65f6d-z7mwf › nats
nats-799bb65f6d-z7mwf nats panic: Couldn't create temporary directory: mkdir /tmp/govips-2656736891: read-only file system
nats-799bb65f6d-z7mwf nats 
nats-799bb65f6d-z7mwf nats goroutine 1 [running]:
nats-799bb65f6d-z7mwf nats github.com/davidbyttow/govips/v2/vips.temporaryDirectoryOrPanic()
nats-799bb65f6d-z7mwf nats 	github.com/davidbyttow/govips/v2@v2.15.0/vips/icc_profiles.go:671 +0x89
nats-799bb65f6d-z7mwf nats github.com/davidbyttow/govips/v2/vips.init()
nats-799bb65f6d-z7mwf nats 	github.com/davidbyttow/govips/v2@v2.15.0/vips/icc_profiles.go:647 +0x17
- nats-799bb65f6d-z7mwf › nats

If you switch to the external nats example, you're gonna see the same message on all other oCIS pods, too:

+ proxy-6c7d4846cc-p45zh › proxy
proxy-6c7d4846cc-p45zh proxy panic: Couldn't create temporary directory: mkdir /tmp/govips-3013908145: read-only file system
proxy-6c7d4846cc-p45zh proxy 
proxy-6c7d4846cc-p45zh proxy goroutine 1 [running]:
proxy-6c7d4846cc-p45zh proxy github.com/davidbyttow/govips/v2/vips.temporaryDirectoryOrPanic()
proxy-6c7d4846cc-p45zh proxy 	github.com/davidbyttow/govips/v2@v2.15.0/vips/icc_profiles.go:671 +0x89
proxy-6c7d4846cc-p45zh proxy github.com/davidbyttow/govips/v2/vips.init()
proxy-6c7d4846cc-p45zh proxy 	github.com/davidbyttow/govips/v2@v2.15.0/vips/icc_profiles.go:647 +0x17
- proxy-6c7d4846cc-p45zh › proxy

Setup

oCIS 6.6 in Kubernetes

Additional context

Add any other context about the problem here.

[wkloucek]

Probably similar to #4894

[rhafer]

This should fix it: davidbyttow/govips#442

[wkloucek]

Ok, for now I'll look adding volumes to /tmp everywhere

[wkloucek]

workaround in owncloud/ocis-charts@531a08d