feat(CORE): docker permissions and rework (#13454)

- fix docker permissions with mounted volumes on new docker versions (https://github.com/docker/desktop-linux/issues/31)
- fix ac-tools image
- cleanup unused env
- add  `cap_add: SYS_NICE` to allow setting process high priority
- fix ccache in docker
- allow to switch between root user (default) to acore user in any container
- fix cache of the downloaded client data
- split docker github actions in 2 parts
- versioning mysql images
- performance improvements

apps/bash_shared/common.sh

@@ -9,7 +9,7 @@ USER_CONF_PATH=${USER_CONF_PATH:-"$AC_PATH_CONF/config.sh"}
 if [ -f  "$USER_CONF_PATH" ]; then
     source "$USER_CONF_PATH" # should overwrite previous
 else
-    echo "NOTICE: file <$USER_CONF_PATH> has not been found, you should create and configure it."
+    echo "NOTICE: file <$USER_CONF_PATH> not found, we use default configuration only."
 fi
 
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