Add relevant dockerfiles

docker/client/Dockerfile

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+FROM rust:latest
+
+WORKDIR /usr/src/client
+COPY . .
+RUN apt-get update && apt-get install -y protobuf-compiler netcat-traditional
+ENTRYPOINT ["./docker/client/client.sh"]

docker/client/client.sh

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+#!/usr/bin/env bash
+set -e
+trap "exit" INT TERM
+trap "kill 0" EXIT
+
+echo "Server addr: $SERVER_IP:$SERVER_PORT"
+
+cargo build --release --example zknode
+
+# Retry loop
+while ! nc -z -w 5 $SERVER_IP $SERVER_PORT; do
+  echo "Waiting for server $SERVER_IP:$SERVER_PORT ... "
+  sleep 0.5
+done
+
+PROCS=()
+n=8
+for i in {1..7}
+  do
+    RUST_LOG=debug cargo run --release --example zknode -- --n $n --king-ip $SERVER_IP:$SERVER_PORT --public-identity-der certs/$i/cert.der --client-only-king-public-identity-der certs/0/cert.der --watch-dir target/zk --name node$i --i $i --private-identity-der certs/$i/key.der &
+    pid=$!
+    PROCS[$i]=$pid
+  done
+
+# Step 5: wait for all processes to finish
+for pid in ${PROCS[@]}; do
+    wait $pid
+done

docker/server/Dockerfile

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+FROM rust:latest
+
+WORKDIR /usr/src/server
+COPY . .
+RUN apt-get update && apt-get install -y protobuf-compiler
+RUN sleep 15 # give time for the clients to get ahead in compiling
+CMD RUST_LOG=debug cargo run --release --example zknode -- --n 8 --king-ip $BIND_ADDRESS --public-identity-der certs/0/cert.der --watch-dir target/zk --name king --i 0 --private-identity-der certs/0/key.der