add ckpool Dockerfile

docker/ckpool/Dockerfile

@@ -0,0 +1,25 @@
+# syntax=docker/dockerfile:1
+FROM ubuntu:20.04 AS build
+
+# Install tools required for project
+# Run `docker build --no-cache .` to update dependencies
+RUN apt-get update
+RUN apt-get -y install build-essential yasm autoconf automake libtool libzmq3-dev git
+RUN git -c http.sslVerify=false clone https://git.markow.su/markow/ckpool.git
+
+# Build ckpool
+WORKDIR ckpool/
+RUN autoupdate
+RUN ./autogen.sh
+RUN CFLAGS="-fcommon -O2 -Wall -march=native" ./configure
+RUN make -j
+RUN ldd src/ckpool
+
+# This results in a single layer image
+FROM ubuntu:20.04
+LABEL maintainer="Sergey Markov <sergey@markow.su>"
+VOLUME [/cfg]
+COPY --from=build /lib/x86_64-linux-gnu/libzmq.so.5 /lib/x86_64-linux-gnu/libzmq.so.5
+COPY --from=build /ckpool/src/ckpool /bin/ckpool
+ENTRYPOINT ["/bin/ckpool"]
+CMD ["-c", "/cfg/ckpool.conf"]