initial commit

deployment/Dockerfile

@@ -0,0 +1,26 @@
+FROM golang:latest as builder
+
+ENV GO111MODULE=on
+ENV GOPATH=/root/go
+RUN mkdir -p /root/go/src
+COPY dyndns /root/go/src/dyndns
+RUN cd /root/go/src/dyndns && go mod download && GOOS=linux GOARCH=amd64 go build -o /root/go/bin/dyndns && go test -v
+
+FROM debian:buster-slim
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
+	apt-get install -q -y bind9 dnsutils curl && \
+	apt-get clean
+
+RUN chmod 770 /var/cache/bind
+COPY deployment/setup.sh /root/setup.sh
+RUN chmod +x /root/setup.sh
+COPY deployment/named.conf.options /etc/bind/named.conf.options
+
+WORKDIR /root
+COPY --from=builder /root/go/bin/dyndns /root/dyndns
+COPY dyndns/views /root/views
+COPY dyndns/static /root/static
+
+EXPOSE 53 8080
+CMD ["sh", "-c", "/root/setup.sh ; service bind9 start ; /root/dyndns"]

deployment/docker-compose.yml

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+version: '3'
+services:
+  ddns:
+    image: bbaerthlein/docker-ddns-server:latest
+    restart: always
+    environment:
+      DDNS_ADMIN_LOGIN: 'admin:$$3$$abcdefg'
+      DDNS_DOMAIN: 'dyndns.example.com'
+      DDNS_PARENT_NS: 'ns.example.com'
+      DDNS_DEFAULT_TTL: '3600'
+    ports:
+      - "53:53"
+      - "53:53/udp"
+      - "8080:8080"
+    volumes:
+       - ./bind-data:/var/cache/bind
+       - ./database:/root/dyndns/database

deployment/envfile

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+DDNS_ADMIN_LOGIN=admin:$$3$$abcdefg
+DDNS_DOMAIN=dyndns.example.com
+DDNS_PARENT_NS=ns.example.com
+DDNS_DEFAULT_TTL=3600

deployment/named.conf.options

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+options {
+        directory "/var/cache/bind";
+        dnssec-validation auto;
+        recursion no;
+        allow-transfer { none; };
+        auth-nxdomain no;
+        listen-on-v6 { any; };
+};

deployment/setup.sh

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+#!/bin/bash
+
+[ -z "$DDNS_ADMIN_LOGIN" ] && echo "DDNS_ADMIN_LOGIN not set" && exit 1;
+[ -z "$DDNS_DOMAIN" ] && echo "DDNS_DOMAIN not set" && exit 1;
+[ -z "$DDNS_PARENT_NS" ] && echo "DDNS_PARENT_NS not set" && exit 1;
+[ -z "$DDNS_DEFAULT_TTL" ] && echo "DDNS_DEFAULT_TTL not set" && exit 1;
+
+DDNS_IP=$(curl icanhazip.com)
+
+if ! grep 'zone "'$DDNS_DOMAIN'"' /etc/bind/named.conf > /dev/null
+then
+	echo "creating zone...";
+	cat >> /etc/bind/named.conf <<EOF
+zone "$DDNS_DOMAIN" {
+	type master;
+	file "$DDNS_DOMAIN.zone";
+	allow-query { any; };
+	allow-transfer { none; };
+	allow-update { localhost; };
+};
+EOF
+fi
+
+if [ ! -f /var/cache/bind/$DDNS_DOMAIN.zone ]
+then
+	echo "creating zone file..."
+	cat > /var/cache/bind/$DDNS_DOMAIN.zone <<EOF
+\$ORIGIN .
+\$TTL 86400	; 1 day
+$DDNS_DOMAIN		IN SOA	${DDNS_PARENT_NS}. root.${DDNS_DOMAIN}. (
+				74         ; serial
+				3600       ; refresh (1 hour)
+				900        ; retry (15 minutes)
+				604800     ; expire (1 week)
+				86400      ; minimum (1 day)
+				)
+			NS	${DDNS_PARENT_NS}.
+			A	${DDNS_IP}
+\$ORIGIN ${DDNS_DOMAIN}.
+\$TTL ${DDNS_DEFAULT_TTL}
+EOF
+fi
+
+# If /var/cache/bind is a volume, permissions are probably not ok
+chown root:bind /var/cache/bind
+chown bind:bind /var/cache/bind/*
+chmod 770 /var/cache/bind
+chmod 644 /var/cache/bind/*