arch_boxes_sync: Pull the artifacts from GitLab's package registry

arch-boxes has decided to use GitLab's package registry instead of job artifacts[1].

[1] arch-boxes@d04c8274

roles/arch_boxes_sync/files/arch-boxes-sync.sh

@@ -2,7 +2,6 @@
 set -o nounset -o errexit -o pipefail
 # https://docs.gitlab.com/ee/api/README.html#namespaced-path-encoding
 readonly PROJECT_ID="archlinux%2Farch-boxes"
-readonly JOB_NAME="build:secure"
 readonly ARCH_BOXES_PATH="/srv/ftp/images"
 readonly MAX_RELEASES="6" # 3 months
 
@@ -36,14 +35,17 @@ while IFS= read -r FILE; do
   FILE_NAME="$(jq -r .file_name <<< "${FILE}")"
   FILE_SHA256="$(jq -r .file_sha256 <<< "${FILE}")"
 
+  # People should download the vagrant images from Vagrant Cloud
+  if [[ $FILE_NAME =~ .*\.box(|\..*)$ ]]; then
+    continue
+  fi
+
   curl --silent --show-error --fail --output "files/${FILE_NAME}" "https://gitlab.archlinux.org/api/v4/projects/${PROJECT_ID}/packages/generic/${PACKAGE_NAME}/${LATEST_VERSION}/${FILE_NAME}"
   sha256sum --quiet -c <<< "${FILE_SHA256} files/${FILE_NAME}"
   touch --no-create --date="@$(date -d "${FILE_CREATED_AT}" +%s)" "files/${FILE_NAME}"
 done < <(jq -c .[] <<< "${PACKAGE_FILES}")
 
 mkdir "${LATEST_VERSION}"
-# People should download the vagrant images from Vagrant Cloud
-rm files/*.box{,.*}
 mv files/* "${LATEST_VERSION}"
 
 for FILE in "${LATEST_VERSION}"/*; do