[PATCH] ci: Allow to define DISTRO_APT_PREMIRRORS in build environment

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

This can be helpful to direct away from http://deb.debian.org where it
is in conflict with local network conditions.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

A surrender to our IT infrastructure. But maybe we are not alone. In 
fact, I heard deb.debian.org is also not very fast behind the Great 
Firewall.

 .gitlab-ci.yml      | 1 +
 scripts/ci_build.sh | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7fc1612..c91a997 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,6 +10,7 @@ variables:
     - export https_proxy=$HTTPS_PROXY
     - export ftp_proxy=$FTP_PROXY
     - export no_proxy=$NO_PROXY
+    - export DISTRO_APT_PREMIRRORS=$DISTRO_APT_PREMIRRORS
   artifacts:
     name: "logs-$CI_JOB_ID"
     paths:
diff --git a/scripts/ci_build.sh b/scripts/ci_build.sh
index a2895f6..a4aa74e 100755
--- a/scripts/ci_build.sh
+++ b/scripts/ci_build.sh
@@ -168,6 +168,10 @@ ISAR_ENABLE_COMPAT_ARCH_debian-stretch_amd64 = "0"
 IMAGE_INSTALL += "kselftest"
 EOF
 
+if [ -n "$DISTRO_APT_PREMIRRORS" ]; then
+    echo "DISTRO_APT_PREMIRRORS = \"$DISTRO_APT_PREMIRRORS\"" >> conf/local.conf
+fi
+
 if [ -n "$CROSS_BUILD" ]; then
     sed -i -e 's/ISAR_CROSS_COMPILE ?= "0"/ISAR_CROSS_COMPILE ?= "1"/g' conf/local.conf
 fi
-- 
2.31.1