feat(example-get-started): update ci, studio link, proper rules (#284)

Author: shcheklein

example-get-started/README.md

@@ -49,6 +49,8 @@ git remote add origin [email protected]:<slug>/example-get-started.git
 # close open PRs
 gh pr close try-large-dataset
 gh pr close tune-hyperparams
+# remove existing tags, branches, experiments
+git ls-remote origin | awk '{print $2}' | xargs -n 1 git push --delete origin || true
 # force push branches
 git push --force origin main
 git push --force origin try-large-dataset

example-get-started/code/.gitlab-ci.yml

@@ -1,14 +1,21 @@
-report:  
+report:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+    - if: $CI_COMMIT_BRANCH == 'main'
   image: dvcorg/cml:0-dvc3-base1  
   before_script:
-    - cml ci
+    - cml ci && cml --version
     - npm install -g json5
   script: |
-    if [ $CI_COMMIT_BRANCH = main ]; then
+    if [ $CI_COMMIT_REF_NAME = main ]; then
       PREVIOUS_REF=HEAD~1
+      COMMIT_HASH1=$CI_COMMIT_BEFORE_SHA
+      COMMIT_HASH2=$CI_COMMIT_SHA
     else
       PREVIOUS_REF=main
       git fetch --depth=1 origin main:main
+      COMMIT_HASH1=$CI_MERGE_REQUEST_DIFF_BASE_SHA
+      COMMIT_HASH2=$CI_COMMIT_SHA
     fi
 
     dvc pull eval
@@ -33,6 +40,7 @@ report:
 
     cat <<EOF > report.md
     # CML Report
+    [![DVC](https://img.shields.io/badge/-Open_in_Studio-grey?style=flat-square&logo=dvc)](https://studio.iterative.ai/team/Iterative/views/example-get-started-2gpv7kdqx2?panels=plots%2C%3Bcompare%2C&commits=${COMMIT_HASH2}%3B${COMMIT_HASH1}&activeCommits=${COMMIT_HASH1}%3Aprimary%3B${COMMIT_HASH2}%3Apurple)
     ## Plots
     ![ROC](./roc.svg)
     ![Precision-Recall](./prc.svg)
@@ -47,4 +55,8 @@ report:
     ${dvc_report}
     EOF
 
-    cml comment create --publish --pr=false report.md
+    if [ $CI_COMMIT_REF_NAME = main ]; then
+        cml comment create --target=commit report.md
+    else
+        cml comment update --target=pr report.md
+    fi