fix: switch back to public us.gcr.io builder images (#104)

* fix: switch back to public us.gcr.io builder images

gcr.io is private and can't be accessed by GitHub runners. This means
buildpack integration test Workflow callers will need to continue
specifying a builder tag from the us.gcr.io buckets instead of using
latest.

Author: anniefu

.github/workflows/main.yml

@@ -29,12 +29,15 @@ jobs:
     - name: Verify generation
       run: "./check_go_generate.sh"
 
+    - name: Build client
+      run: $(cd client && go build -o ../cl) && chmod +x cl
+      
     - name: Run conformance tests
-      uses: ./action
-      with:
-        functionType: 'http'
-        validateMapping: false
-        source: 'testdata'
-        target: 'HTTP'
-        runtime: 'go113'
-        tag: 'go113_20201005_20_RC00'
+      run: |
+        ./cl \
+        -type='http' \
+        -validate-mapping=false \
+        -builder-source='testdata' \
+        -builder-target='HTTP' \
+        -builder-runtime='go113' \
+        -builder-tag='go113_20220501_1_13_15_RC00'

cl

@@ -30,7 +30,7 @@ import (
 
 const (
 	image             = "conformance-test-func"
-	builderURL        = "gcr.io/fn-img/buildpacks/%s/builder:%s"
+	builderURL        = "us.gcr.io/fn-img/buildpacks/%s/builder:%s"
 	gcfTargetPlatform = "gcf"
 )
 

client/buildpacks.go

@@ -0,0 +1 @@
+{"res":"PASS"}