diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..54cf3a3
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,34 @@
+name: "Build & Push images"
+
+on:
+  push:
+    paths:
+      - '.github/workflows/main.yml'
+      - 'Dockerfile'
+    branches:
+      - pwn
+  schedule:
+    # https://crontab.guru/#0_0_*_*_0
+    # At 00:00 on Sunday.
+    - cron: '0 0 * * 0'
+
+jobs:
+  build:
+    strategy:
+      fail-fast: true
+      matrix:
+        tags:
+          - |
+            22.04
+            22
+            jammy
+            latest
+    uses: sky-bro/ubuntu-cn/.github/workflows/build-one-version.yml@master
+    with:
+      tags: |
+        ${{ matrix.tags }}
+      registry_image: skybro/ubt-pwn
+      build_args: |
+        USERNAME=sky
+        PASSWORD=sky
+    secrets: inherit
diff --git a/.ssh/authorized_keys b/.ssh/authorized_keys
new file mode 100644
index 0000000..950728c
--- /dev/null
+++ b/.ssh/authorized_keys
@@ -0,0 +1 @@
+ssh-rsa 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 openpgp:0xD3ECB362
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..59bc9a3
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,71 @@
+ARG VERSION=latest
+FROM ubuntu:$VERSION
+
+ENV DEBIAN_FRONTEND noninteractive
+
+ARG USERNAME=foo
+ARG PASSWORD=bar
+
+
+# pre-install softwares
+RUN sed -i "s/http:\/\/archive.ubuntu.com/http:\/\/mirrors.tuna.tsinghua.edu.cn/g" /etc/apt/sources.list && \
+    apt-get -y update && \
+    apt-get install -y lib32z1 apt-transport-https python3 python3-pip git \
+    libglib2.0-dev libfdt-dev libpixman-1-dev zlib1g-dev \
+    vim nano netcat openssh-server unzip make wget bison flex build-essential \
+    curl qemu qemu-system-x86 gcc gdb clang lldb tmux konsole
+
+# enable ssh login
+RUN rm -f /etc/service/sshd/down
+RUN sed -ri 's/^#?PermitRootLogin\s+.*/PermitRootLogin yes/' /etc/ssh/sshd_config &&\
+    sed -ri 's/#UseDNS\ no/UseDNS\ no/g' /etc/ssh/sshd_config && \
+    sed -ri "s/StrictModes yes/StrictModes no/g" /etc/ssh/sshd_config && \
+    sed -ri "s/UsePAM yes/UsePAM no/g" /etc/ssh/sshd_config
+
+# enable login with password
+RUN echo 'PasswordAuthentication yes' >> /etc/ssh/sshd_config
+
+# set username and password
+RUN groupadd ${USERNAME} && \
+    useradd -g ${USERNAME} ${USERNAME} -m -s /bin/bash && \
+    echo "${USERNAME}:${PASSWORD}" | chpasswd && \
+    echo "root:${PASSWORD}" | chpasswd
+
+# enable ssh key login
+ADD --chown=${USERNAME}:${USERNAME} .ssh /home/${USERNAME}/.ssh
+# ADD --chown=root:root .ssh /home/${USERNAME}/.ssh
+ADD .ssh /root/.ssh
+
+# keep container running
+RUN echo "#!/bin/sh\nservice ssh restart\nsleep infinity" > /root/start.sh
+RUN chmod +x /root/start.sh
+
+# enable sudo
+RUN apt-get install -y sudo && \
+       usermod -aG sudo ${USERNAME}
+
+# pwn-related tools
+RUN python3 -m pip config set global.index-url http://pypi.tuna.tsinghua.edu.cn/simple && \
+    python3 -m pip config set global.trusted-host pypi.tuna.tsinghua.edu.cn && \
+    python3 -m pip install -U pip && \
+    python3 -m pip install --no-cache-dir \
+    pwntools \
+    ropgadget \
+    z3-solver \
+    smmap2 \
+    apscheduler \
+    ropper \
+    unicorn \
+    keystone-engine \
+    capstone \
+    angr \
+    pebble \
+    r2pipe \
+    LibcSearcher
+
+RUN git clone https://github.com/pwndbg/pwndbg && \
+    cd pwndbg && chmod +x setup.sh && ./setup.sh
+
+CMD ["/root/start.sh"]
+
+EXPOSE 22
diff --git a/README.org b/README.org
new file mode 100644
index 0000000..b65dd20
--- /dev/null
+++ b/README.org
@@ -0,0 +1,13 @@
+#+Title: Ubuntu Docker Image for PWN
+
+* Build
+
+put your public ssh key under
+
+#+begin_src shell
+#+end_src
+
+* Run
+
+#+begin_src shell
+#+end_src