Feat: add Dockerfile

Dockerfile

@@ -0,0 +1,14 @@
+FROM docker.io/library/debian:12-slim
+
+RUN \
+      apt-get update && \
+      apt-get -y install git curl python3 build-essential g++-11 dos2unix && \
+      apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+
+RUN bash -c "$(curl -fsSL https://raw.githubusercontent.com/ioi-2017/tps/master/online-installer/install.sh)"
+
+WORKDIR /work
+
+ENTRYPOINT ["bash"]
+CMD []