[docker] added ssh and rdma support for docker (#4192)

docker/Dockerfile

@@ -5,6 +5,18 @@ LABEL org.opencontainers.image.source = "https://github.com/hpcaitech/ColossalAI
 LABEL org.opencontainers.image.licenses = "Apache License 2.0"
 LABEL org.opencontainers.image.base.name = "docker.io/library/hpcaitech/cuda-conda:11.3"
 
+# enable passwordless ssh
+RUN mkdir ~/.ssh && \
+    printf "Host * \n    ForwardAgent yes\nHost *\n    StrictHostKeyChecking no" > ~/.ssh/config && \
+    ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa && \
+    cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
+
+# enable RDMA support
+RUN apt-get update && \
+    apt-get install -y infiniband-diags perftest ibverbs-providers libibumad3 libibverbs1 libnl-3-200 libnl-route-3-200 librdmacm1 && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
 # install torch
 RUN conda install pytorch==1.12.1 torchvision==0.13.1 torchaudio==0.12.1 cudatoolkit=11.3 -c pytorch