feat: use official singularity image

This would remove the need to maintain a special dind image.

.gitlab-ci.yml

@@ -411,29 +411,20 @@ jug_xl:nightly:
                    containers/jug
 
 
-.singularity:
+singularity:
   image:
     name: ${SINGULARITY_IMAGE}
     entrypoint: [""]
   stage: deploy
   interruptible: true
   rules:
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      when: on_success
     - if: '$CI_COMMIT_BRANCH == "master"'
       when: on_success
     - when: never
   artifacts:
       expire_in: 1 days
       paths:
-        - build/${BUILD_IMAGE}.sif
-  before_script: ""
-  script:
-    - mkdir build
-    - singularity pull build/${BUILD_IMAGE}.sif docker://${CI_REGISTRY_IMAGE}/${BUILD_IMAGE}:${INTERNAL_TAG}-${BUILD_TYPE}
-  after_script: ""
-
-jug_dev:singularity:
+        - ${BUILD_IMAGE}.sif
   parallel:
     matrix:
       - BUILD_TYPE:
@@ -441,23 +432,14 @@ jug_dev:singularity:
         - nightly
         BUILD_IMAGE:
         - jug_dev
-  extends: .singularity
-  needs:
-    - version
-    - jug_dev
-
-jug_xl:singularity:
-  parallel:
-    matrix:
-      - BUILD_TYPE:
-        - default
-        - nightly
-        BUILD_IMAGE:
         - jug_xl
-  extends: .singularity
   needs:
     - version
-    - jug_xl
+    - jug_dev
+    - jug_xl:default
+    - jug_xl:nightly
+  script:
+    - singularity pull ${BUILD_IMAGE}.sif docker://${CI_REGISTRY_IMAGE}/${BUILD_IMAGE}:${INTERNAL_TAG}-${BUILD_TYPE}
 
 
 benchmarks:reconstruction:default: