Add Dockerfile for haproxy + haproxy-lua-acme

Dockerfile

@@ -0,0 +1,18 @@
+FROM haproxy:2.1
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+      ca-certificates \
+      curl \
+      lua-json \
+      lua-luaossl \
+ && apt-get clean
+ENV CONFIG_DIR=/usr/local/etc/haproxy/
+# lua http
+RUN curl https://raw.githubusercontent.com/haproxytech/haproxy-lua-http/master/http.lua > /http.lua
+# https://github.com/haproxytech/haproxy-lua-acme
+RUN curl https://raw.githubusercontent.com/haproxytech/haproxy-lua-acme/master/acme.lua > /acme.lua \
+ && curl https://raw.githubusercontent.com/haproxytech/haproxy-lua-acme/master/config.lua > /config.lua \
+ && curl https://raw.githubusercontent.com/haproxytech/haproxy-lua-acme/master/haproxy.cfg > $CONFIG_DIR/haproxy.cfg
+# check conf
+RUN haproxy -c -- $CONFIG_DIR/haproxy.cfg
+