Pass suite as a command-line argument for builds and derived images

This sets the stage for building multiple suites.  Note that migration
from Debian is not expected to work for multiple Devuan suites.

.gitlab-ci.yml

@@ -29,9 +29,9 @@ migrate:
 build:
   stage: build
   script:
-    - ./build.sh
+    - ./build.sh "$DEVUAN_SUITE"
 
 derive:
   stage: derive
   script:
-    - ./derive.sh
+    - ./derive.sh "$DEVUAN_SUITE"

build.sh

@@ -5,7 +5,7 @@
 # License: GPL-3.0+
 
 MIGRATED_IMAGE=$CI_REGISTRY_IMAGE/debian-$DEBIAN_VERSION/migrated
-SUITE=$DEVUAN_SUITE
+SUITE=$1
 
 rm -rf rootfs || true
 

derive.sh

@@ -4,7 +4,7 @@
 #
 # License: GPL-3.0+
 
-SUITE=$DEVUAN_SUITE
+SUITE=$1
 BASE_IMAGE=$CI_REGISTRY_IMAGE:$SUITE
 
 IMAGE=$CI_REGISTRY_IMAGE/builder