CI: workaraound for variable not passed to after_script (#2256)

.gitlab-ci.yml

@@ -180,11 +180,9 @@ check-transaction-versions:
   script:
     - scripts/gitlab/check_extrinsics_ordering.sh
 
-.build-linux:                      &build-linux
-  <<:                              *collect-artifacts
-  <<:                              *docker-env
-  <<:                              *compiler-info
-  after_script:
+.pack-artifacts:                   &pack-artifacts
+  - mkdir -p ./artifacts
+  - VERSION="${CI_COMMIT_REF_NAME}" # will be tag or branch name
   - mv ./target/release/polkadot ./artifacts/.
   - sha256sum ./artifacts/polkadot | tee ./artifacts/polkadot.sha256
   - if [ "${CI_COMMIT_TAG}" ]; then
@@ -201,7 +199,9 @@ check-transaction-versions:
 
 build-linux-release:
   stage:                           build
-  <<:                              *build-linux
+  <<:                              *collect-artifacts
+  <<:                              *docker-env
+  <<:                              *compiler-info
   rules:
     # .rules-test with manual on PRs
     - if: $PIPELINE == "rococo"
@@ -211,21 +211,21 @@ build-linux-release:
       allow_failure: true
     - when: always
   script:
-    - mkdir -p ./artifacts
-    - VERSION="${CI_COMMIT_REF_NAME}" # will be tag or branch name
     - time cargo build --release --verbose
     - sccache -s
+    - *pack-artifacts
 
 build-linux-rococo:
   stage:                           build
-  <<:                              *build-linux
+  <<:                              *collect-artifacts
+  <<:                              *docker-env
+  <<:                              *compiler-info
   rules:
     - if: $PIPELINE == "rococo"
   script:
-    - mkdir -p ./artifacts
-    - VERSION="${CI_COMMIT_REF_NAME}" # will be tag or branch name
     - time cargo build --release --verbose --features=real-overseer
     - sccache -s
+    - *pack-artifacts
 
 generate-impl-guide:
   stage:                           build