Add Dockerfile

Dockerfile

@@ -0,0 +1,19 @@
+FROM alpine:latest AS builder
+
+ARG XINETD_VERSION=2.3.15.4
+ARG VERSION=3.0.1
+
+RUN apk add build-base autoconf automake libtool pkgconf git
+RUN git clone -b ${XINETD_VERSION} https://github.com/openSUSE/xinetd.git
+RUN cd xinetd && sh ./autogen.sh && ./configure && make
+RUN git clone -b ${VERSION} https://github.com/gophernicus/gophernicus.git
+RUN cd gophernicus && make
+
+FROM alpine:latest
+EXPOSE 70/tcp
+VOLUME /var/gopher
+COPY --from=builder /xinetd/xinetd /usr/sbin
+COPY --from=builder /gophernicus/gophernicus /usr/sbin
+COPY xinetd.conf /etc/xinetd.conf
+
+CMD ["/usr/sbin/xinetd", "-dontfork"]

README.md

@@ -1,2 +1,23 @@
 # docker-gophernicus
-An Alpine based Gophernicus Gopher server Docker image
+
+An Alpine Linux based Docker image for the Gophernicus Gopher server (https://github.com/gophernicus/gophernicus).
+
+Do you just want to run a simple Gopher service? Do you not want to mess the hassle of setting up old-school inetd/xinetd/systemd sockets/etc? Are you already running all your other services as containers? Well so did I!
+
+This image runs Gophernicus via xinetd on an Alpine Linux base for a Docker image that weighs in at just a smidge under 7MB. Set your hostname, point your favorite volume at `/var/gopher`, bind port 70 and go!
+
+ex:
+```
+docker build -t gophernicus .
+
+docker run --name gophernicus \
+	--hostname <your gopher hostname> \
+	-p 70:70 \
+	-v <your gopher root>:/var/gopher \
+	gophernicus
+```
+
+## TODO
+
+- Logging to stdout
+- Configuration via environment variables

xinetd.conf

@@ -0,0 +1,21 @@
+defaults
+{
+	instances = 25
+	log_type = FILE /var/log/servicelog
+	log_on_success = HOST PID
+	log_on_failure = HOST
+}
+
+# default: on
+# description: Gophernicus - Modern full-featured gopher server
+service gopher
+{
+	socket_type	= stream
+	protocol    = tcp
+	port        = 70
+	wait		= no
+	user		= nobody
+	server		= /usr/sbin/gophernicus
+	server_args = -r /var/gopher
+	disable		= no
+}