[WIP] Add TCP support

Dockerfile

@@ -12,12 +12,18 @@ RUN apt-get update \
 
 # Configure Nginx and apply fix for very long server names
 RUN echo "daemon off;" >> /etc/nginx/nginx.conf \
- && sed -i 's/worker_processes  1/worker_processes  auto/' /etc/nginx/nginx.conf
+ && sed -i 's/worker_processes  1/worker_processes  auto/' /etc/nginx/nginx.conf \
+ && echo "stream { \
+    include /etc/nginx/stream.conf.d/*.conf; \
+}" >> /etc/nginx/nginx.conf \
+ && mkdir -p /etc/nginx/stream.conf.d
 
 # Install Forego
 ADD https://github.com/jwilder/forego/releases/download/v0.16.1/forego /usr/local/bin/forego
 RUN chmod u+x /usr/local/bin/forego
 
+RUN apt-get update && apt-get install -y vim mysql-client && echo "127.0.0.1 whoami.loc" >> /etc/hosts
+
 ENV DOCKER_GEN_VERSION 0.7.3
 
 RUN wget https://github.com/jwilder/docker-gen/releases/download/$DOCKER_GEN_VERSION/docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz \
@@ -31,5 +37,8 @@ ENV DOCKER_HOST unix:///tmp/docker.sock
 
 VOLUME ["/etc/nginx/certs", "/etc/nginx/dhparam"]
 
+EXPOSE 80
+EXPOSE 81
+
 ENTRYPOINT ["/app/docker-entrypoint.sh"]
 CMD ["forego", "start", "-r"]

Procfile

@@ -1,2 +1,2 @@
-dockergen: docker-gen -watch -notify "nginx -s reload" /app/nginx.tmpl /etc/nginx/conf.d/default.conf
-nginx: nginx
+dockergen: docker-gen -config /app/docker-gen.cfg
+nginx: nginx-debug

docker-compose.yml

@@ -1,14 +1,22 @@
 version: '2'
 services:
   nginx-proxy:
-    image: jwilder/nginx-proxy
-    container_name: nginx-proxy
+    build: .
     ports:
-      - "80:80"
+      - "180:80"
+      - "81:81"
     volumes:
       - /var/run/docker.sock:/tmp/docker.sock:ro
 
   whoami:
     image: jwilder/whoami
     environment:
-      - VIRTUAL_HOST=whoami.local
+      - VIRTUAL_HOST=whoami.loc
+
+  mysql:
+    image: mysql:5.6
+    environment:
+      VIRTUAL_TCP_HOST: whoami.loc
+      VIRTUAL_TCP_PORT: 3306
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: test

docker-gen.cfg

@@ -0,0 +1,11 @@
+[[config]]
+template = "/app/nginx.tmpl"
+dest = "/etc/nginx/conf.d/default.conf"
+notifycmd = "nginx-debug -s reload"
+watch = true
+
+[[config]]
+template = "/app/nginx.stream.tmpl"
+dest = "/etc/nginx/stream.conf.d/default.conf"
+notifycmd = "nginx-debug -s reload"
+watch = true

nginx.stream.tmpl

@@ -0,0 +1,67 @@
+{{ $CurrentContainer := where $ "ID" .Docker.CurrentContainerID | first }}
+
+{{ define "upstream" }}
+	{{ if .Address }}
+		{{/* If we got the containers from swarm and this container's port is published to host, use host IP:PORT */}}
+		{{ if and .Container.Node.ID .Address.HostPort }}
+			# {{ .Container.Node.Name }}/{{ .Container.Name }}
+			server {{ .Container.Node.Address.IP }}:{{ .Address.HostPort }};
+		{{/* If there is no swarm node or the port is not published on host, use container's IP:PORT */}}
+		{{ else if .Network }}
+			# {{ .Container.Name }}
+			server {{ .Network.IP }}:{{ .Address.Port }};
+		{{ end }}
+	{{ else if .Network }}
+		# {{ .Container.Name }}
+		server {{ .Network.IP }} down;
+	{{ end }}
+{{ end }}
+
+access_log off;
+error_log /var/log/nginx/debug.log debug;
+
+{{ if $.Env.RESOLVERS }}
+resolver {{ $.Env.RESOLVERS }};
+{{ end }}
+
+{{ $enable_ipv6 := eq (or ($.Env.ENABLE_IPV6) "") "true" }}
+
+{{ range $host, $containers := groupByMulti $ "Env.VIRTUAL_TCP_HOST" "," }}
+
+{{ $host := trim $host }}
+{{ $is_regexp := hasPrefix "~" $host }}
+{{ $upstream_name := when $is_regexp (sha1 $host) $host }}
+
+# {{ $host }}
+upstream {{ $upstream_name }} {
+
+{{ range $container := $containers }}
+	{{ $addrLen := len $container.Addresses }}
+
+	{{ range $knownNetwork := $CurrentContainer.Networks }}
+		{{ range $containerNetwork := $container.Networks }}
+			{{ if (and (ne $containerNetwork.Name "ingress") (or (eq $knownNetwork.Name $containerNetwork.Name) (eq $knownNetwork.Name "host"))) }}
+				## Can be connect with "{{ $containerNetwork.Name }}" network
+
+				{{/* If only 1 port exposed, use that */}}
+				{{ if eq $addrLen 1 }}
+					{{ $address := index $container.Addresses 0 }}
+					{{ template "upstream" (dict "Container" $container "Address" $address "Network" $containerNetwork) }}
+				{{/* If more than one port exposed, use the one matching VIRTUAL_TCP_PORT env var, falling back to standard web port 81 */}}
+				{{ else }}
+					{{ $port := coalesce $container.Env.VIRTUAL_TCP_PORT "81" }}
+					{{ $address := where $container.Addresses "Port" $port | first }}
+					{{ template "upstream" (dict "Container" $container "Address" $address "Network" $containerNetwork) }}
+				{{ end }}
+			{{ end }}
+		{{ end }}
+	{{ end }}
+{{ end }}
+}
+
+server {
+	listen {{ $host }}:81;
+	proxy_pass {{ trim $upstream_name }};
+}
+
+{{ end }}