diff --git a/src/php/docker/grpc-src/Dockerfile b/src/php/docker/grpc-src/Dockerfile
index 4998ab7dd1d..936ddc0da23 100644
--- a/src/php/docker/grpc-src/Dockerfile
+++ b/src/php/docker/grpc-src/Dockerfile
@@ -32,13 +32,13 @@ WORKDIR /github/grpc
 
 COPY . .
 
-RUN make && make install
+RUN make shared_c static_c
 
 
 WORKDIR /github/grpc/src/php/ext/grpc
 
 RUN phpize && \
-  ./configure --enable-tests && \
+  GRPC_LIB_SUBDIR=libs/opt ./configure --enable-grpc=/github/grpc --enable-tests && \
   make && \
   make install
 
diff --git a/templates/src/php/docker/grpc-src/Dockerfile.template b/templates/src/php/docker/grpc-src/Dockerfile.template
index 57db1039318..4921bcea400 100644
--- a/templates/src/php/docker/grpc-src/Dockerfile.template
+++ b/templates/src/php/docker/grpc-src/Dockerfile.template
@@ -31,13 +31,13 @@
 
   COPY . .
 
-  RUN make && make install
+  RUN make shared_c static_c
 
 
   WORKDIR /github/grpc/src/php/ext/grpc
 
   RUN phpize && ${'\\'}
-    ./configure --enable-tests && ${'\\'}
+    GRPC_LIB_SUBDIR=libs/opt ./configure --enable-grpc=/github/grpc --enable-tests && ${'\\'}
     make && ${'\\'}
     make install