Fix: remove aesm service and az-dcap-client

Recommendation is to use Intel QPL instead of Azure DCAP on Ubuntu
22.04.

See microsoft/Azure-DCAP-Client#175.

Dockerfile

@@ -26,9 +26,6 @@ RUN apt-get update && apt-get install -y \
     wget && \
     rm -rf /var/lib/apt/lists/*
 
-# Ubuntu focal-security repository
-RUN echo "deb http://security.ubuntu.com/ubuntu focal-security main" | tee /etc/apt/sources.list.d/focal-security.list
-
 # Gramine APT repository
 RUN curl -fsSLo /usr/share/keyrings/gramine-keyring.gpg https://packages.gramineproject.io/gramine-keyring.gpg && \
     echo "deb [arch=amd64 signed-by=/usr/share/keyrings/gramine-keyring.gpg] https://packages.gramineproject.io/ jammy main" \
@@ -39,10 +36,6 @@ RUN curl -fsSLo /usr/share/keyrings/intel-sgx-deb.asc https://download.01.org/in
     echo "deb [arch=amd64 signed-by=/usr/share/keyrings/intel-sgx-deb.asc] https://download.01.org/intel-sgx/sgx_repo/ubuntu jammy main" \
     | tee /etc/apt/sources.list.d/intel-sgx.list
 
-# Microsoft APT repository
-RUN echo "deb [arch=amd64] https://packages.microsoft.com/ubuntu/20.04/prod focal main" >> /etc/apt/sources.list.d/microsoft.list \
-  && curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | apt-key add -
-
 # Install Intel SGX dependencies and Gramine
 RUN apt-get update && apt-get install -y \
     libsgx-launch \
@@ -52,9 +45,7 @@ RUN apt-get update && apt-get install -y \
     libsgx-dcap-ql \
     libsgx-dcap-quote-verify \
     linux-base-sgx \
-    libssl1.1 \
-    az-dcap-client \
-    sgx-aesm-service \
+    libsgx-dcap-default-qpl \
     libsgx-aesm-quote-ex-plugin \
     gramine && \
     rm -rf /var/lib/apt/lists/*