First partial working docker setup

add initial version of docker setup

add configuration via environment variables

remove override file

support docker-compose.override.yml

add up2date pdns container

.gitignore

@@ -1,5 +1,4 @@
 *.swp
-pdns.conf
-pdns_backend.py
-ddns
+/docker/docker-compose.override.yml
+/ddns
 dump.rdb

docker/ddns/Dockerfile

@@ -0,0 +1,3 @@
+FROM golang:1.7-onbuild
+
+CMD ["/bin/true"]

docker/docker-compose.yml

@@ -0,0 +1,43 @@
+version: '2'
+
+volumes:
+  ddns:
+
+services:
+  ddns:
+    restart: unless-stopped
+    build:
+      context: ..
+      dockerfile: docker/ddns/Dockerfile
+    volumes:
+      - ddns:/go/bin/
+
+  ddns-web:
+    restart: unless-stopped
+    build:
+      context: web/
+      dockerfile: Dockerfile
+    depends_on:
+      - redis
+    volumes_from:
+      - ddns
+    environment:
+      DDNS_DOMAIN: d.example.net
+
+  ddns-powerdns:
+    restart: unless-stopped
+    build:
+      context: powerdns/
+      dockerfile: Dockerfile
+    depends_on:
+      - redis
+    volumes_from:
+      - ddns
+    environment:
+      DDNS_DOMAIN: d.example.net
+      DDNS_SOA_DOMAIN: soa.example.net
+      DDNS_VERBOSE: --verbose
+
+  redis:
+    restart: unless-stopped
+    image: redis:latest

docker/powerdns/Dockerfile

@@ -0,0 +1,20 @@
+FROM buildpack-deps:jessie-scm
+MAINTAINER Philipp Böhm <philipp@pboehm.org>
+
+# the setup procedure according to https://repo.powerdns.com/ (Debian 8 Jessie)
+RUN echo "deb http://repo.powerdns.com/debian jessie-auth-40 main" > /etc/apt/sources.list.d/pdns.list \
+	&& echo "Package: pdns-*\nPin: origin repo.powerdns.com\nPin-Priority: 600\n" >> /etc/apt/preferences.d/pdns \
+	&& curl https://repo.powerdns.com/FD380FBB-pub.asc | apt-key add - \
+	&& apt-get -y update \
+	&& apt-get install -y pdns-server pdns-backend-pipe \
+	&& rm -rf /var/lib/apt/lists/*
+
+COPY pdns.conf /etc/powerdns/pdns.conf
+
+COPY entrypoint.sh /
+RUN chmod +x /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
+
+EXPOSE 53
+
+CMD ["pdns_server", "--daemon=no"]

docker/powerdns/entrypoint.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+CONFIG_FILE=/etc/powerdns/pdns.conf
+
+sed -i 's/{{DDNS_DOMAIN}}/'"${DDNS_DOMAIN}"'/g' ${CONFIG_FILE}
+sed -i 's/{{DDNS_SOA_DOMAIN}}/'"${DDNS_SOA_DOMAIN}"'/g' ${CONFIG_FILE}
+sed -i 's/{{DDNS_VERBOSE}}/'"${DDNS_VERBOSE}"'/g' ${CONFIG_FILE}
+
+exec "$@"

docker/powerdns/pdns.conf

@@ -0,0 +1,8 @@
+disable-tcp=yes
+cache-ttl=0
+loglevel=7
+log-dns-details=yes
+disable-axfr=yes
+
+launch=pipe
+pipe-command=/go/bin/app --domain={{DDNS_DOMAIN}} --soa_fqdn={{DDNS_SOA_DOMAIN}} --redis=redis:6379 {{DDNS_VERBOSE}} backend

docker/web/Dockerfile

@@ -0,0 +1,6 @@
+FROM buildpack-deps:jessie-scm
+MAINTAINER Philipp Böhm <philipp@pboehm.org>
+
+ENV GIN_MODE release
+
+CMD /go/bin/app --domain=${DDNS_DOMAIN} --redis=redis:6379 web

web/web.go

@@ -4,7 +4,7 @@ import (
 	"../config"
 	"../hosts"
 	"fmt"
-	"github.com/gin-gonic/gin"
+	"gopkg.in/gin-gonic/gin.v1"
 	"html/template"
 	"log"
 	"net"