first commit

base/polkit/0.105/Dockerfile

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+FROM ubuntu:20.04
+
+#RUN sed -i "s/http:\/\/archive.ubuntu.com/http:\/\/mirrors.aliyun.com/g" /etc/apt/sources.list && \
+#         sed -i "s/http:\/\/security.ubuntu.com/http:\/\/mirrors.aliyun.com/g" /etc/apt/sources.list
+
+RUN set -ex \
+    && apt-get update \
+    && DEBIAN_FRONTEND="noninteractive" apt-get -y install tzdata ca-certificates wget qemu-system cloud-image-utils
+
+RUN mkdir /home/chall
+
+WORKDIR /home/chall
+
+# old version ubuntu
+RUN wget http://cloud-images-archive.ubuntu.com/releases/focal/release-20200423/ubuntu-20.04-server-cloudimg-amd64.img
+	
+COPY ./user-data /home/chall/
+
+RUN cloud-localds user-data.img user-data && \
+    qemu-img resize ubuntu-20.04-server-cloudimg-amd64.img +20G
+
+EXPOSE 2222
+
+CMD qemu-system-x86_64 \
+  -drive "file=ubuntu-20.04-server-cloudimg-amd64.img,format=qcow2" \
+  -drive "file=user-data.img,format=raw" \
+  -m 2G \
+  -nic user,model=virtio,hostfwd=tcp:0.0.0.0:2222-:22 \
+  -smp $(nproc) \
+  -nographic \
+  -monitor null