rmv interpolation

.gitlab-ci.yml

 ---
 workflow:
   rules:
-    - if: ${CI_PIPELINE_SOURCE} == "merge_request_event" || (${CI_PIPELINE_SOURCE} == "push" && (${CI_COMMIT_BRANCH} == "main" || ${CI_COMMIT_BRANCH} == "stable"))
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event" || ($CI_PIPELINE_SOURCE == "push" && ($CI_COMMIT_BRANCH == "main" || $CI_COMMIT_BRANCH == "stable"))
       when: always
     - when: never
 variables:
-  version: 0.0.${CI_PIPELINE_IID}
+  version: 0.0.$CI_PIPELINE_IID
   stable_branch: main
   release_tag_prefix: v
 stages:
@@ -22,7 +22,7 @@ test_job:
 build_job:
   stage: build
   rules:
-    - if: ${CI_COMMIT_REF_NAME} =~ /stable/
+    - if: $CI_COMMIT_REF_NAME =~ /stable/
       when: always
   image: public.ecr.aws/docker/library/golang:1.21
   parallel:
@@ -43,7 +43,7 @@ build_job:
 publish_job:
   stage: publish
   rules:
-    - if: ${CI_COMMIT_REF_NAME} =~ /stable/
+    - if: $CI_COMMIT_REF_NAME =~ /stable/
       when: always
   image: public.ecr.aws/docker/library/alpine:latest
   tags:
@@ -54,9 +54,9 @@ publish_job:
     - apk add --no-cache curl
   script: >
     for file in $(ls webservice_*); do
-      curl --header "JOB-TOKEN: ${CI_JOB_TOKEN}" \
+      curl --header "JOB-TOKEN: $CI_JOB_TOKEN" \
         --upload-file "./$file" \
-        "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/generic/artifacts/${version}/$file"
+        "$CI_API_V4_URL/projects/$CI_PROJECT_ID/packages/generic/artifacts/$version/$file"
     done
 job_tag_stable_branch:
   stage: tag
@@ -68,5 +68,5 @@ job_tag_stable_branch:
   before_script:
     - apk add --no-cache git
   script:
-    - git tag "${release_tag_prefix}${version}"
-    - git push origin "${release_tag_prefix}${version}"
+    - git tag "$release_tag_prefix$version"
+    - git push origin "$release_tag_prefix$version"