diff --git a/example/README.md b/example/README.md
index 332ada1a..40427903 100644
--- a/example/README.md
+++ b/example/README.md
@@ -7,7 +7,7 @@ This example introduces the development and deployment of a whole-flow confident
 
 ## Highlights
 
-* Whole-flow sensitive data protection by utilizing the Occlum [`Init-RA`](../demos/remote_attestation/init_ra_flow/) solution.
+* Whole-flow sensitive data protection by utilizing the Occlum [`GRPC RATLS`](../../tools/toolchains/grpc_ratls/) solution.
 
 * Directly generate inference service (`Tensorflow-serving`) running in TEE from Docker image (`tensorflow/serving`) without modification.
 
@@ -88,7 +88,7 @@ Below are the two Occlum images.
 * **occlum_server**
 
 It works as the role of GRPC-RATLS server.
-The primary content are from demo [`ra_tls`](../demos/ra_tls).
+The primary content are from toolchain [`ra_tls`](../tools/toolchains/grpc_ratls).
 
 * **occlum_tf**
 
diff --git a/example/build_content.sh b/example/build_content.sh
index 307442c7..bba80f8f 100755
--- a/example/build_content.sh
+++ b/example/build_content.sh
@@ -3,22 +3,14 @@ set -e
 
 script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}"  )" >/dev/null 2>&1 && pwd )"
 
-export DEP_LIBS_DIR="${script_dir}/dep_libs"
 export INITRA_DIR="${script_dir}/init_ra"
-export RATLS_DIR="${script_dir}/../demos/ra_tls"
+export RATLS_DIR="${script_dir}/../tools/toolchains/grpc_ratls"
 export TF_DIR="${script_dir}/tf_serving"
 
 function build_ratls()
 {
-    rm -rf ${DEP_LIBS_DIR} && mkdir ${DEP_LIBS_DIR}
     pushd ${RATLS_DIR}
-    ./download_and_prepare.sh
-    ./build_and_install.sh musl
-    ./build_occlum_instance.sh musl
-
-    cp ./grpc-src/examples/cpp/ratls/build/libgrpc_ratls_client.so ${DEP_LIBS_DIR}/
-    cp ./grpc-src/examples/cpp/ratls/build/libhw_grpc_proto.so ${DEP_LIBS_DIR}/
-
+    ./build.sh
     popd
 }
 
diff --git a/example/init_ra/build.rs b/example/init_ra/build.rs
index 8a70a4cd..f3d489f5 100644
--- a/example/init_ra/build.rs
+++ b/example/init_ra/build.rs
@@ -1,5 +1,7 @@
 fn main() {
-    println!("cargo:rustc-link-search=native=../dep_libs");
+    println!("cargo:rustc-link-search=native=/opt/occlum/toolchains/dcap_lib/musl");
+    println!("cargo:rustc-link-search=native=/opt/occlum/toolchains/grpc_ratls/musl");
     println!("cargo:rustc-link-lib=dylib=grpc_ratls_client");
     println!("cargo:rustc-link-lib=dylib=hw_grpc_proto");
+    println!("cargo:rustc-link-lib=dylib=occlum_dcap")
 }
\ No newline at end of file
diff --git a/example/init_ra_client.yaml b/example/init_ra_client.yaml
index 300599d1..47fe9553 100644
--- a/example/init_ra_client.yaml
+++ b/example/init_ra_client.yaml
@@ -8,12 +8,14 @@ targets:
   - target: /lib/
     copy:
       - files:
-        - ${DEP_LIBS_DIR}/libgrpc_ratls_client.so
+        - /opt/occlum/toolchains/grpc_ratls/musl/libgrpc_ratls_client.so
+        - /opt/occlum/toolchains/grpc_ratls/musl/libhw_grpc_proto.so
+        - /opt/occlum/toolchains/dcap_lib/musl/libocclum_dcap.so.0.1.0
   - target: /
     copy:
       - files:
         - dynamic_config.json
-  - target: /usr/share/grpc/
+  - target: /etc
     copy:
-      - files:
-        - ${RATLS_DIR}/grpc-src/etc/roots.pem
+      - dirs:
+        - /etc/ssl
diff --git a/example/ra_server.yaml b/example/ra_server.yaml
index d7225594..450360b1 100644
--- a/example/ra_server.yaml
+++ b/example/ra_server.yaml
@@ -4,13 +4,15 @@ targets:
   - target: /bin/
     copy:
       - files:
-        - ${RATLS_DIR}/grpc-src/examples/cpp/ratls/build/server
+        - /opt/occlum/toolchains/grpc_ratls/musl/server
+  - target: /lib/
+    copy:
+      - files:
+        - /opt/occlum/toolchains/grpc_ratls/musl/libgrpc_ratls_server.so
+        - /opt/occlum/toolchains/grpc_ratls/musl/libhw_grpc_proto.so
+        - /opt/occlum/toolchains/dcap_lib/musl/libocclum_dcap.so.0.1.0
   - target: /
     copy:
       - files:
         - dynamic_config.json
         - ../secret_config.json
-  - target: /usr/share/grpc/
-    copy:
-      - files:
-        - ${RATLS_DIR}/grpc-src/etc/roots.pem