# docker build -t test-haproxy -f Docker.haproxy .
# docker run -it --rm --name haproxy-syntax-check test-haproxy haproxy -c -f /usr/local/etc/haproxy/haproxy.cfg
# docker run -d -p 1111:1111 --name some-haproxy --sysctl net.ipv4.ip_unprivileged_port_start=0 test-haproxy

FROM haproxy:2.3
COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg