Install git package in build job

.gitlab-ci.yml

@@ -4,4 +4,17 @@ include:
   - https://www.opencode.net/zynthbox/gitlab-ci-tools/raw/main/zynthbox-default-ci.yml
 
 variables:
-  ARCH: 'armhf'
\ No newline at end of file
+  ARCH: 'armhf'
+
+# Install packages
+.install-packages: &install-packages
+  - apt update -qq
+  - apt install -y git
+
+build armhf:
+  extends: 
+    - .build-package-armhf
+  script:
+    - !reference [.build-zynthbox]
+    - *install-packages
+    - !reference [.build-package-armhf, script]