437: change brew e2e test to use a non-bundled extension

Author: asgrim

test/end-to-end/Dockerfile

@@ -26,9 +26,8 @@ FROM homebrew/brew AS test_pie_installs_build_tools_with_brew
 RUN brew install php
 COPY --from=build_pie_phar /app/pie.phar /usr/local/bin/pie
 USER root
-RUN apt-get update && apt-get install -y unzip libbz2-dev
+RUN apt-get update && apt-get install -y unzip
 RUN apt-get remove --allow-remove-essential -y apt
 USER linuxbrew
-RUN brew install bzip2
-RUN pie install --auto-install-build-tools -v php/bz2
+RUN pie install --auto-install-build-tools -v asgrim/example-pie-extension
 RUN pie show