add tls support

Dockerfile

@@ -1,6 +1,13 @@
-FROM haproxy:2.2-alpine
+FROM haproxy:2.7-alpine
+USER root
+
+COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
+COPY start.sh /usr/local/bin/start.sh
+
+RUN apk upgrade --no-cache && \
+    apk add --no-cache ca-certificates wget tzdata openssl && \
+    chmod +x /usr/local/bin/start.sh
 
-EXPOSE 2375
 ENV ALLOW_RESTARTS=0 \
     AUTH=0 \
     BUILD=0 \
@@ -28,4 +35,5 @@ ENV ALLOW_RESTARTS=0 \
     TASKS=0 \
     VERSION=1 \
     VOLUMES=0
-COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
+
+ENTRYPOINT start.sh

haproxy.cfg

@@ -1,46 +1,66 @@
 global
-    log stdout format raw daemon "${LOG_LEVEL}"
-
-    pidfile /run/haproxy.pid
-    maxconn 4000
-
-    # Turn on stats unix socket
-    server-state-file /var/lib/haproxy/server-state
-
+    ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
+    ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
+    ssl-default-bind-options prefer-client-ciphers no-sslv3 no-tlsv10 no-tlsv11 no-tls-tickets
+    ssl-default-server-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
+    ssl-default-server-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
+    ssl-default-server-options no-sslv3 no-tlsv10 no-tlsv11 no-tls-tickets
+
 defaults
-    mode http
-    log global
-    option httplog
-    option dontlognull
-    option http-server-close
-    option redispatch
-    retries 3
-    timeout http-request 10s
-    timeout queue 1m
     timeout connect 10s
-    timeout client 10m
-    timeout server 10m
-    timeout http-keep-alive 10s
-    timeout check 10s
-    maxconn 3000
-
-    # Allow seamless reloads
-    load-server-state-from-file global
-
-    # Use provided example error pages
-    errorfile 400 /usr/local/etc/haproxy/errors/400.http
-    errorfile 403 /usr/local/etc/haproxy/errors/403.http
-    errorfile 408 /usr/local/etc/haproxy/errors/408.http
-    errorfile 500 /usr/local/etc/haproxy/errors/500.http
-    errorfile 502 /usr/local/etc/haproxy/errors/502.http
-    errorfile 503 /usr/local/etc/haproxy/errors/503.http
-    errorfile 504 /usr/local/etc/haproxy/errors/504.http
-
-backend dockerbackend
-    server dockersocket $SOCKET_PATH
+    timeout client 30s
+    timeout server 30s
 
 frontend dockerfrontend
+    mode tcp
     bind :2375
+    tcp-request inspect-delay 10s
+    tcp-request content accept if HTTP
+    tcp-request content accept if { req.ssl_hello_type 1 }
+    use_backend http if HTTP
+    default_backend https
+
+backend http
+    mode tcp
+    server loopback-for-http abns@haproxy-http send-proxy-v2
+backend https
+    mode tcp
+    server loopback-for-https abns@haproxy-https send-proxy-v2
+
+frontend http
+    mode http
+    bind abns@haproxy-http accept-proxy
+    http-request deny unless METH_GET || { env(POST) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/containers/[a-zA-Z0-9_.-]+/((stop)|(restart)|(kill)) } { env(ALLOW_RESTARTS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/auth } { env(AUTH) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/build } { env(BUILD) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/commit } { env(COMMIT) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/configs } { env(CONFIGS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/containers } { env(CONTAINERS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/distribution } { env(DISTRIBUTION) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/events } { env(EVENTS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/exec } { env(EXEC) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/grpc } { env(GRPC) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/images } { env(IMAGES) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/info } { env(INFO) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/networks } { env(NETWORKS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/nodes } { env(NODES) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/_ping } { env(PING) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/plugins } { env(PLUGINS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/secrets } { env(SECRETS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/services } { env(SERVICES) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/session } { env(SESSION) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/swarm } { env(SWARM) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/system } { env(SYSTEM) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/tasks } { env(TASKS) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/version } { env(VERSION) -m bool }
+    http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/volumes } { env(VOLUMES) -m bool }
+    http-request deny
+    default_backend dockerbackend
+
+frontend https
+    mode http
+    bind abns@haproxy-https accept-proxy ssl crt /etc/cert.pem alpn h3,h2,http/1.1
     http-request deny unless METH_GET || { env(POST) -m bool }
     http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/containers/[a-zA-Z0-9_.-]+/((stop)|(restart)|(kill)) } { env(ALLOW_RESTARTS) -m bool }
     http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/auth } { env(AUTH) -m bool }
@@ -68,3 +88,7 @@ frontend dockerfrontend
     http-request allow if { path,url_dec -m reg -i ^(/v[\d\.]+)?/volumes } { env(VOLUMES) -m bool }
     http-request deny
     default_backend dockerbackend
+
+backend dockerbackend
+    mode http
+    server dockersocket $SOCKET_PATH

start.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+openssl req -nodes -new -x509 -subj '/CN=*' -sha256 -keyout /etc/privkey.pem -out /etc/fullchain.pem -days 365000 > /dev/null 2>&1
+cat /etc/fullchain.pem /etc/privkey.pem | tee /etc/cert.pem > /dev/null 2>&1
+haproxy -f /usr/local/etc/haproxy/haproxy.cfg