[mod] reduce enviroment variables in shell scripts to what is needed

Not all settings from the 'brand:' section of the YAML files are needed in the
shell scripts.  This patch reduce the variables in ./utils/brand.env to what is
needed.  The following ('brand:' settings) can be removed from this file:

- ISSUE_URL
- DOCS_URL
- PUBLIC_INSTANCES
- WIKI_URL

Tasks running outside of an *installed instance*, need the following settings
from the YAML configuration:

- GIT_URL            <--> brand.git_url
- GIT_BRANCH         <--> brand.git_branch
- SEARX_URL          <--> server.base_url  (aka PUBLIC_URL)
- SEARX_PORT         <--> server.port
- SEARX_BIND_ADDRESS <--> server.bind_address

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/docs/dev/makefile.rst b/docs/dev/makefile.rst
index 2c10181be..5bf3c13b2 100644
--- a/docs/dev/makefile.rst
+++ b/docs/dev/makefile.rst
@@ -104,6 +104,16 @@ The ``make buildenv`` target will update the *build environment* in:
 
 - :origin:`utils/brand.env`
 
+Tasks running outside of an *installed instance*, need the following settings
+from the YAML configuration:
+
+- ``GIT_URL`` from :ref:`brand.git_url <settings global brand>`
+- ``GIT_BRANCH`` from :ref:`brand.git_branch <settings global brand>`
+
+- ``SEARX_URL`` from :ref:`server.base_url <settings global server>` (aka
+  ``PUBLIC_URL``)
+- ``SEARX_BIND_ADDRESS`` from :ref:`server.bind_address <settings global server>`
+- ``SEARX_PORT`` from :ref:`server.port <settings global server>`
 
 .. _make run: