Skip running e2e tests when commit is tagged with '[skip e2e]' (#9486)

[skip e2e]

.circleci/config.yml

@@ -229,7 +229,11 @@ jobs:
           command: mv ./dist-test ./dist
       - run:
           name: test:e2e:chrome
-          command: yarn test:e2e:chrome
+          command: |
+            if .circleci/scripts/test-run-e2e
+            then
+              yarn test:e2e:chrome
+            fi
           no_output_timeout: 20m
       - store_artifacts:
           path: test-artifacts
@@ -250,7 +254,11 @@ jobs:
           command: mv ./dist-test ./dist
       - run:
           name: test:e2e:firefox
-          command: yarn test:e2e:firefox
+          command: |
+            if .circleci/scripts/test-run-e2e
+            then
+              yarn test:e2e:firefox
+            fi
           no_output_timeout: 20m
       - store_artifacts:
           path: test-artifacts

.circleci/scripts/test-run-e2e

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -e
+set -u
+set -o pipefail
+
+# Skip running e2e tests if the HEAD commit is tagged correctly
+if git show --format='%B' --no-patch "$CIRCLE_SHA1" | grep --fixed-strings --quiet '[skip e2e]'
+then
+    printf '%s\n' "$CIRCLE_SHA1 contains the tag '[skip e2e]' so e2e tests will not run"
+    exit 1
+fi
+
+exit 0