From e82621e1530ce08078baf6d21a9577cdb99f4bb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philipp=20B=C3=B6hm?= <philipp@pboehm.org>
Date: Sun, 25 Dec 2016 23:09:05 +0100
Subject: [PATCH] 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                    |  5 ++--
 docker/ddns/Dockerfile        |  3 +++
 docker/docker-compose.yml     | 43 +++++++++++++++++++++++++++++++++++
 docker/powerdns/Dockerfile    | 20 ++++++++++++++++
 docker/powerdns/entrypoint.sh |  9 ++++++++
 docker/powerdns/pdns.conf     |  8 +++++++
 docker/web/Dockerfile         |  6 +++++
 web/web.go                    |  2 +-
 8 files changed, 92 insertions(+), 4 deletions(-)
 create mode 100644 docker/ddns/Dockerfile
 create mode 100644 docker/docker-compose.yml
 create mode 100644 docker/powerdns/Dockerfile
 create mode 100644 docker/powerdns/entrypoint.sh
 create mode 100644 docker/powerdns/pdns.conf
 create mode 100644 docker/web/Dockerfile

diff --git a/.gitignore b/.gitignore
index 621dce7..00090a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
 *.swp
-pdns.conf
-pdns_backend.py
-ddns
+/docker/docker-compose.override.yml
+/ddns
 dump.rdb
diff --git a/docker/ddns/Dockerfile b/docker/ddns/Dockerfile
new file mode 100644
index 0000000..936e5fd
--- /dev/null
+++ b/docker/ddns/Dockerfile
@@ -0,0 +1,3 @@
+FROM golang:1.7-onbuild
+
+CMD ["/bin/true"]
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
new file mode 100644
index 0000000..de8e4aa
--- /dev/null
+++ b/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
\ No newline at end of file
diff --git a/docker/powerdns/Dockerfile b/docker/powerdns/Dockerfile
new file mode 100644
index 0000000..af138e5
--- /dev/null
+++ b/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"]
\ No newline at end of file
diff --git a/docker/powerdns/entrypoint.sh b/docker/powerdns/entrypoint.sh
new file mode 100644
index 0000000..3070000
--- /dev/null
+++ b/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' ${CONFIG_FILE}
+
+exec "$@"
\ No newline at end of file
diff --git a/docker/powerdns/pdns.conf b/docker/powerdns/pdns.conf
new file mode 100644
index 0000000..5e209f9
--- /dev/null
+++ b/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
\ No newline at end of file
diff --git a/docker/web/Dockerfile b/docker/web/Dockerfile
new file mode 100644
index 0000000..8c4e53c
--- /dev/null
+++ b/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
diff --git a/web/web.go b/web/web.go
index 66df140..a31bd0a 100644
--- a/web/web.go
+++ b/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"