fa7523d3aa75b0266015af59901c2397b52265b5 ci: Extend docs (MarcoFalke)
fa493ef08830efe493150d07411af85518959804 ci: Make ci system read-only on the git work tree (MarcoFalke)
fab133329281cdaa3804585a2cdadd0478fefa4f ci: Remove git from required packages on host (MarcoFalke)
fa00393bce0c6128c6188afc7a1d50cc01b0277f ci: Make all filesystem operations inside docker (MarcoFalke)
Pull request description:
Running the ci completely in a docker, without leaving any traces on the host system is not possible right now because the ccache and depends dir needs to be propagated back and picked up by the host for caching.
Fixes#17372
ACKs for top commit:
JeremyRubin:
tested ACK fa7523d3aa75b0266015af59901c2397b52265b5
Tree-SHA512: 4bce1a0f883bcbdb34abf409bdbc80d420c5da2045d2f9c5536ac433f9e5b490f23df084546c8c049f688b487572bbfc4f9c4029e9e672f4d9279739d066ed2e
fa330d8fed5a02349440be170af3b443c1321b4b ci: Avoid invoking curl on the host (MarcoFalke)
Pull request description:
The only requirement for the ci system are the programs `docker.io` and `bash`. However, the mac cross build invokes `curl` on the host. Fix that.
Before:
```
$ FILE_ENV="./ci/test/00_setup_env_mac.sh" ./ci/test_run_all.sh
...
./ci/test/05_before_script.sh: line 22: curl: command not found
```
After:
```
... (command passes)
ACKs for top commit:
promag:
ACK fa330d8fed5a02349440be170af3b443c1321b4b.
Tree-SHA512: 49120fd671a48a6599dd6c34f6d3502a6e9f84b4476061cab06f55cba374d8188f53b9b41363e90f5fafb0074767b581f30bd2545c0b6934580a7eccfa1ef5c4
