ci: update dockerfile

Author: SnowballXueQiu

Dockerfile

@@ -22,4 +22,11 @@ WORKDIR /app
 COPY --from=builder /app/target/release/backend_server /home/BackendServer/backend_server
 COPY --from=builder /app/target/release/key_tool /home/BackendServer/key_tool
 
+RUN apt-get update && apt-get install -y openssl
+
+RUN \
+  apt-get clean && \
+  apt-get autoclean && \
+  rm -rf /var/lib/apt/lists/*
+
 CMD ["bash"]