Start trying to dockerize

Dockerfile

@@ -0,0 +1,9 @@
+FROM alpine AS builder
+
+RUN apk --no-cache add build-base
+COPY . /src
+RUN make -C /src DESTDIR=/tanks install
+
+FROM neale/eris
+COPY builder:/opt/tanks /tanks
+CMD [ "/opt/tanks/go.sh" ]

Makefile

@@ -4,18 +4,23 @@ WWW = style.css grunge.png designer.js figures.js tanks.js nav.html.inc jstanks.
 
 CFLAGS = -Wall
 
+DESTDIR = /opt/tanks
+
 all: $(BINARIES) $(HTML)
 
 install:
-	install -d $(DESTDIR)/usr/bin
+	install -d $(DESTDIR)/bin
-	install run-tanks $(DESTDIR)/usr/bin
+    install go.sh $(DESTDIR)/bin
-	install forftanks $(DESTDIR)/usr/bin
+	install round.sh $(DESTDIR)/bin
+	install forftanks $(DESTDIR)/bin
 
-	install -d $(DESTDIR)/usr/lib/tanks
+	install -d $(DESTDIR)/www
-	install designer.cgi $(DESTDIR)/usr/lib/tanks
+	install designer.cgi $(DESTDIR)/www
-	install $(HTML) $(DESTDIR)/usr/lib/tanks
+	install $(HTML) $(DESTDIR)/www
-	install $(WWW) $(DESTDIR)/usr/lib/tanks
+	install $(WWW) $(DESTDIR)/www
-	cp -r examples $(DESTDIR)/usr/lib/tanks/examples
+
+    install -d $(DESTDIR)/examples
+	cp -r examples $(DESTDIR)/examples
 
 forftanks: forftanks.o ctanks.o forf.o
 forftanks: LDLIBS = -lm

go.sh

@@ -0,0 +1,9 @@
+#! /bin/sh
+
+(
+  cd /tanks/www
+  s6-tcpserver -u 80 -g 80 0.0.0.0 80 /usr/bin/eris -c -.
+) &
+
+(
+  cd