[PATCH] user_manual: Make usage of DISTRO_APT_PREMIRRORS clear

[vijaikumar.kanagarajan@gmail.com]

From: Vijai Kumar K <Vijaikumar_Kanagarajan@mentor.com>

DISTRO_APT_PREMIRRORS doesnot have effect on the final image.
The final image uses the sources list specified in DISTRO_APT_SOURCES.

Make that clear in the user manual.

Signed-off-by: Vijai Kumar K <Vijaikumar_Kanagarajan@mentor.com>
---
 doc/user_manual.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/user_manual.md b/doc/user_manual.md
index e3266a9..9ac30d1 100644
--- a/doc/user_manual.md
+++ b/doc/user_manual.md
@@ -324,7 +324,7 @@ Some other variables include:
  - `HOST_DISTRO_APT_SOURCES` - List of apt source files for SDK root filesystem. This variable is optional.
  - `HOST_DISTRO_APT_PREFERENCES` - List of apt preference files for SDK root filesystem. This variable is optional.
  - `HOST_DISTRO_BOOTSTRAP_KEYS` - Analogously to DISTRO_BOOTSTRAP_KEYS: List of gpg key URIs used to verify apt bootstrap repo for the host.
- - `DISTRO_APT_PREMIRRORS` - The preferred mirror (append it to the default URI in the format `ftp.debian.org my.preferred.mirror`. This variable is optional.
+ - `DISTRO_APT_PREMIRRORS` - The preferred mirror (append it to the default URI in the format `ftp.debian.org my.preferred.mirror`. This variable is optional. PREMIRRORS will be used only for the build. The final images will have the sources list as mentioned in DISTRO_APT_SOURCES.
  - `THIRD_PARTY_APT_KEYS` - List of gpg key URIs used to verify apt repos for apt installation after bootstrapping
  - `FILESEXTRAPATHS` - The default directories BitBake uses when it processes recipes are initially defined by the FILESPATH variable. You can extend FILESPATH variable by using FILESEXTRAPATHS.
  - `FILESOVERRIDES` - A subset of OVERRIDES used by the build system for creating FILESPATH. The FILESOVERRIDES variable uses overrides to automatically extend the FILESPATH variable.
-- 
2.17.1