[docker] Make fusion data directory in runtime docker file
diff --git a/docker/teaclave-rt.ubuntu-1804.Dockerfile b/docker/teaclave-rt.ubuntu-1804.Dockerfile
index 7145958..8fafb3f 100644
--- a/docker/teaclave-rt.ubuntu-1804.Dockerfile
+++ b/docker/teaclave-rt.ubuntu-1804.Dockerfile
@@ -30,6 +30,10 @@
echo 'source /opt/sgxsdk/environment' >> /etc/environment
ENV LD_LIBRARY_PATH=/opt/intel/sgxsdk/sdk_libs
+# Make a directory for fusion data. Since we are in the single machine mode,
+# there is no need to mount a network file system.
+RUN mkdir -p /tmp/fusion_data
+
ADD release/services/teaclave_frontend_service /teaclave/
ADD release/services/teaclave_frontend_service_enclave.signed.so /teaclave/
