add checkupdate pipeline

.gitlab-ci.yml

@@ -3,6 +3,34 @@ variables:
   pip: pip3 --timeout 100 --retries 10
 
 
+checkupdates:
+  image: registry.gitlab.com/fdroid/ci-images-base
+  except:
+    - pipelines
+    - schedules
+    - triggers
+  before_script:
+    - |
+      set -xe
+      apt-get update
+      apt-get -qy dist-upgrade
+      cd ..
+      rm -rf fdroidserver
+      mkdir fdroidserver
+      git ls-remote https://gitlab.com/fdroid/fdroidserver.git master
+      curl --silent https://gitlab.com/fdroid/fdroidserver/-/archive/master/fdroidserver-master.tar.gz | tar -xz --directory=fdroidserver --strip-components=1
+      export PATH="$PWD/fdroidserver:$PATH"
+      cd -
+  script: |
+    set -xe
+    if [ "$CI_PROJECT_NAMESPACE" = "fdroid" ]; then echo "not testing in fdroid"; exit 0; fi
+    git fetch https://gitlab.com/fdroid/fdroiddata.git
+    appids=$(git diff --name-only --diff-filter=d FETCH_HEAD...HEAD "metadata/*.yml" | sed -n -e 's,^metadata/\([^/][^/]*\)\.yml,\1,p')
+    if [ -n "$appids" ]; then
+      fdroid checkupdates --auto -v $appids
+      git --no-pager diff --color=always --exit-code
+    fi
+
 lint:
   image: registry.gitlab.com/fdroid/ci-images-base
   except: