Simplify the GitLabCI default template

defaults/gitlab-ci.yml

@@ -1,22 +1,8 @@
-{{#GITLABCOVERAGE}}
-stages:
-  - test
-  - coverage
-{{/GITLABCOVERAGE}}
 Julia {{VERSION}}:
-  stage: test
   image: julia:{{VERSION}}
-  tags:
-    - docker
-  script:
-    julia -e 'using Pkg; Pkg.build(); Pkg.test({{#GITLABCOVERAGE}}; coverage=true{{/GITLABCOVERAGE}})'
+  script: julia --project='.' -e 'using Pkg; Pkg.build(); Pkg.test({{#GITLABCOVERAGE}}; coverage=true{{/GITLABCOVERAGE}})'
 {{#GITLABCOVERAGE}}
-Coverage:
-  stage: coverage
   coverage: /Test Coverage (\d+\.\d+%)/
-  image: julia:{{VERSION}}
-  tags:
-    - docker
-  before_script: apt-get update && apt-get -y install git make unzip gcc bzip2
-  script: julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; c, t = get_summary(process_folder()); @printf("Test Coverage %.2f%%\n", 100c/t)'
+  after_script:
+    - julia -e 'using Printf; using Pkg; Pkg.add("Coverage"); using Coverage; c, t = get_summary(process_folder()); @printf "Test Coverage %.2f%%\n" 100c/t'
 {{/GITLABCOVERAGE}}