Update nyancat-server

Dockerfile

@@ -0,0 +1,34 @@
+FROM alpine AS builder
+
+RUN \
+    apk upgrade --update && \
+    apk add g++ make git autoconf automake
+
+WORKDIR /tmp
+
+RUN \
+    git clone https://github.com/boppy/onenetd.git && \
+    cd /tmp/onenetd && autoreconf -vfi && ./configure && make && \
+    cp ./onenetd /usr/local/bin
+
+WORKDIR /tmp/nyancat
+
+COPY . .
+
+RUN \
+    make && \
+    cp ./src/nyancat /usr/local/bin/
+
+
+FROM alpine
+
+LABEL \
+    maintainer="Wei He <docker@weispot.com>" \
+    verion="1.0" \
+    description="Nyancat Telnet Server"
+
+COPY --from=builder /usr/local/bin/onenetd /usr/local/bin/nyancat /usr/local/bin/
+
+EXPOSE 23
+
+ENTRYPOINT ["onenetd", "-v1", "0", "23", "nyancat", "-I", "--telnet"]