graphene's upstream repo rebased some branches, invalidating the commit ids we were using

README.md

@@ -23,7 +23,7 @@ The docker images download the following software:
   * [Linux SGX SDK and PSW](https://github.com/intel/linux-sgx) 
 
   graphene-docker/Dockerfile:
-  * [Graphene-SGX](https://github.com/oscarlab/graphene)
+  * [Graphene-SGX](https://github.com/oscarlab/graphene) (it actually downloads our mirror of a branch on that repo that has since been rebased, but we wanted to keep the exact version that we used)
 
   docker/Dockerfile:
   * Our own codebase for the [Decryptor](https://git-crysp.uwaterloo.ca/miti/Decryptor) enclave, the [Verifier](https://git-crysp.uwaterloo.ca/miti/verifier) enclave and the [PHP extension for the Apache web server](https://git-crysp.uwaterloo.ca/miti/Apache_PHP_extension).

graphene-docker/Dockerfile

@@ -4,9 +4,9 @@ RUN apt install -y gawk libprotobuf-c-dev protobuf-c-compiler bison python3-pip
 RUN pip3 install protobuf
 
 WORKDIR /root
-RUN git clone https://github.com/oscarlab/graphene
+RUN git clone https://git-crysp.uwaterloo.ca/miti/graphene
 WORKDIR graphene
-RUN git checkout c0bc728
+RUN git checkout oldmirror
 RUN git submodule init
 RUN git submodule update
 RUN openssl genrsa -3 -out Pal/src/host/Linux-SGX/signer/enclave-key.pem 3072