tweak tests for bcr

Author: kriscfoster

.github/workflows/presubmit.yml

@@ -0,0 +1,16 @@
+bcr_test_module:
+  module_path: "examples"
+  matrix:
+    bazel: ["7.x", "8.x"]
+    platform:
+    - debian10
+    - ubuntu2004
+    - macos
+    - macos_arm64
+  tasks:
+    test:
+      name: "Run test module"
+      bazel: ${{ bazel }}
+      platform: ${{ platform }}
+      test_targets:
+        - "//..."

README.md

@@ -37,7 +37,7 @@ docker_compose_test(
 ```yaml
 services:
   test_container:
-    image: gcr.io/distroless/static-debian12:debug
+    image: ubuntu:25.04
     entrypoint: ["echo", "Hello World!"]
 ```
 

examples/external-image-test/docker-compose.yml

@@ -15,7 +15,7 @@
 
 services:
   test_container:
-    image: gcr.io/distroless/static-debian12:debug
+    image: ubuntu:25.04
     entrypoint: ["cat", "/resources/hello.txt"]
     volumes:
       - ./src/test/resources:/resources

examples/pre-compose-up-script-test/docker-compose.yml

@@ -15,7 +15,7 @@
 
 services:
   test_container:
-    image: gcr.io/distroless/static-debian12:debug
+    image: ubuntu:25.04
     entrypoint: ["cat", "/resources/generated_file.txt"]
     volumes:
-      - ./src/test/resources:/resources
+      - /tmp/foo:/resources

examples/pre-compose-up-script-test/src/test/resources/.gitignore

@@ -2,6 +2,6 @@
 set -e
 
 # This file is created as a pre-req to the docker-compose test actually running.
-# Locally, the file will always be there but it won't be checked in as it is in .gitignore.
 # CI will make sure that the file is generated on every execution.
-touch generated_file.txt
+mkdir -p /tmp/foo
+touch /tmp/foo/generated_file.txt