build: fix mdc snapshot test cronjob (#17909)

Author: devversion

.circleci/config.yml

@@ -117,12 +117,6 @@ var_17: &setup_bazel_binary
     name: "Setting up global Bazel binary"
     command: ./scripts/circleci/setup_bazel_binary.sh
 
-# **Note**: When updating the beginning of the cache key, also update the fallback cache
-# key to match the new cache key prefix. This allows us to take advantage of CircleCI's
-# fallback caching. Read more here: https://circleci.com/docs/2.0/caching/#restoring-cache.
-var_18: &mdc_deps_cache_key v1-mdc-deps-{{ checksum "/tmp/material-components-web/package-lock.json" }}
-var_19: &mdc_deps_fallback_cache_key v1-mdc-deps-
-
 # -----------------------------
 # Container version of CircleCI
 # -----------------------------
@@ -430,16 +424,13 @@ jobs:
       - run: bazel test src/... --build_tag_filters=-docs-package,-e2e --test_tag_filters=-e2e --config=view-engine
 
   # ----------------------------------------------------------------------------
-  # Job that runs all Bazel tests against material-components-web#master.
+  # Job that runs all Bazel tests against material-components-web@canary
   # ----------------------------------------------------------------------------
   mdc_snapshot_test_cronjob:
     <<: *job_defaults
     resource_class: xlarge
     environment:
       GCP_DECRYPT_TOKEN: *gcp_decrypt_token
-      MDC_REPO_URL: "https://github.com/material-components/material-components-web.git"
-      MDC_REPO_BRANCH: "master"
-      MDC_REPO_TMP_DIR: "/tmp/material-components-web"
     steps:
       - *checkout_code
       - *restore_cache
@@ -449,30 +440,11 @@ jobs:
       - *yarn_download
       - *yarn_install
 
-      - run: git clone ${MDC_REPO_URL} --branch ${MDC_REPO_BRANCH} --depth 1 ${MDC_REPO_TMP_DIR}
-      - restore_cache:
-          keys:
-            - *mdc_deps_cache_key
-            - *mdc_deps_fallback_cache_key
-      - run:
-          name: "Installing dependencies for MDC repository"
-          # MDC repository does not use Yarn for node dependencies, so in order to respect the
-          # lock-file we need to use "npm" when installing dependencies.
-          command: cd ${MDC_REPO_TMP_DIR} && npm install
-      - save_cache:
-          key: *mdc_deps_cache_key
-          paths:
-            # Repository path must be kept in sync with the `$MDC_REPO_TMP_DIR` env variable.
-            # It needs to be hardcoded here, because env variables interpolation is not supported.
-            - "/tmp/material-components-web/node_modules"
-      - run:
-          name: "Building MDC snapshot builds"
-          command: |
-            cd ${MDC_REPO_TMP_DIR}
-            yarn dist && node scripts/cp-pkgs.js
+      # Install the latest canary version of the "material-components-web".
+      - run: yarn add material-components-web@canary
+
       # Setup the components repository to use the MDC snapshot builds.
-      - run: node ./scripts/circleci/setup-mdc-snapshots.js ${MDC_REPO_TMP_DIR}/packages/ $(git -C ${MDC_REPO_TMP_DIR} rev-parse HEAD)
-      # Run project tests with the MDC snapshot builds.
+      # Run project tests with the MDC canary builds.
       - run: bazel build src/... --build_tag_filters=-docs-package,-e2e
       - run: bazel test src/... --build_tag_filters=-docs-package,-e2e --test_tag_filters=-e2e