php: remove protobuf-php clone hack
diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile.template
index 476f9d3..a293bae 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile.template
@@ -45,11 +45,6 @@
RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer
- # As an attempt to work around #4212, try to prefetch Protobuf-PHP dependency
- # into composer cache to prevent "composer install" from cloning on each build.
- RUN git clone --mirror https://github.com/stanley-cheung/Protobuf-PHP.git ${'\\'}
- /root/.composer/cache/vcs/git-github.com-stanley-cheung-Protobuf-PHP.git/
-
# Download the patched PHP protobuf so that PHP gRPC clients can be generated
# from proto3 schemas.
RUN git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php
diff --git a/templates/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile.template b/templates/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile.template
index 4cd069d..df61808 100644
--- a/templates/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile.template
+++ b/templates/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile.template
@@ -46,11 +46,6 @@
RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer
- # As an attempt to work around #4212, try to prefetch Protobuf-PHP dependency
- # into composer cache to prevent "composer install" from cloning on each build.
- RUN git clone --mirror https://github.com/stanley-cheung/Protobuf-PHP.git ${'\\'}
- /root/.composer/cache/vcs/git-github.com-stanley-cheung-Protobuf-PHP.git/
-
# Download the patched PHP protobuf so that PHP gRPC clients can be generated
# from proto3 schemas.
RUN git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php
diff --git a/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
index a411531..4e94db2 100644
--- a/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
@@ -107,11 +107,6 @@
RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer
-# As an attempt to work around #4212, try to prefetch Protobuf-PHP dependency
-# into composer cache to prevent "composer install" from cloning on each build.
-RUN git clone --mirror https://github.com/stanley-cheung/Protobuf-PHP.git \
- /root/.composer/cache/vcs/git-github.com-stanley-cheung-Protobuf-PHP.git/
-
# Download the patched PHP protobuf so that PHP gRPC clients can be generated
# from proto3 schemas.
RUN git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php
diff --git a/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile b/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile
index bdac01a..13afa15 100644
--- a/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_php/Dockerfile
@@ -112,11 +112,6 @@
RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer
-# As an attempt to work around #4212, try to prefetch Protobuf-PHP dependency
-# into composer cache to prevent "composer install" from cloning on each build.
-RUN git clone --mirror https://github.com/stanley-cheung/Protobuf-PHP.git \
- /root/.composer/cache/vcs/git-github.com-stanley-cheung-Protobuf-PHP.git/
-
# Download the patched PHP protobuf so that PHP gRPC clients can be generated
# from proto3 schemas.
RUN git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php