feat(sgx): add sidecar dockerfile

sgx_network_simulation/Makefile

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+protobuf:
+	python -m grpc_tools.protoc -I . \
+		--python_out=. \
+		--grpc_python_out=. \
+		service.proto
+
+gen-grpc-key:
+	openssl req -newkey rsa:2048 -nodes -keyout server.key -x509 -days 365 -out server.crt \
+		-subj "/[email protected]/CN=fl-sgx-test.com/O=BBB/OU=BBB"
+
+docker-build:
+	cd ../.. && docker build -t sgx_network_simulation:latest -f experiments/sgx_network_simulation/Dockerfile .
+
+run-docker-server:
+	docker run -it -p 32443:32443 sgx_network_simulation:latest server
+
+run-docker-client:
+	docker run -it sgx_network_simulation:latest client --server_addr=localhost:32101
+
+run-docker-debug:
+	docker run -it --rm sgx_network_simulation:latest

sgx_network_simulation/requirements.txt

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+grpcio==1.41.1
+grpcio-tools==1.41.1