Add dnsmasq as an optional container

README.md

@@ -9,6 +9,49 @@ chmod u+x ./scripts/generate-certificates.sh
 ```
 You need to add the generated certificate `certificates/docker.rootCA.crt` to your browser authorities and trust related websites.
 
+### Setup local DNS
+
+To be able to resolve all DNS lookup to *.pontsun.test (or other configured domains), we need a local dns server.
+There's 2 options to do that, either in the provided docker container. Or in a locally installed dns server like dnsmasq.
+
+
+#### 1) Use the included dns server container
+
+Do use the included dnsmasq container, start pontsun with 
+
+```bash
+cd containers
+docker-compose -f docker-compose.yml -f docker-compose.dns.yml up -d
+```
+
+You can also add the following to your `containers/.env` file instead
+
+```
+COMPOSE_FILE=docker-compose.yml:docker-compose.dns.yml
+```
+
+#### or 3) Use a locally installed dns server
+
+See
+
+- [Docker installation for Mac](docs/docker-installation-for-mac.md)
+- [Docker installation for Ubuntu](docs/docker-installation-for-ubuntu.md)
+
+for detilas
+
+#### Add domain to your dns config
+
+After you have set the dns server up, do:
+
+```bash
+. containers/.env
+./scripts/pontsun add-host $PROJECT_DOMAIN
+```
+
+do add your default domain (by default pontsun.test) to the dns server.
+
+###  Start pontsun with traefik and portainer
+
 Start Traefik and Portainer
 ```bash
 cd containers

build/build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+cd $DIR
+docker build -t liip/pontsun-dnsmasq:latest dnsmasq

build/dnsmasq/Dockerfile

@@ -0,0 +1,8 @@
+FROM alpine:edge
+
+RUN apk --no-cache add dnsmasq
+
+ADD dnsmasq.conf /etc/
+
+EXPOSE 53 53/udp
+ENTRYPOINT ["dnsmasq", "-d"]

build/dnsmasq/dnsmasq.conf

@@ -0,0 +1,11 @@
+#dnsmasq config, for a complete example, see:
+#  http://oss.segetech.com/intra/srv/dnsmasq.conf
+#log all dns queries
+log-queries
+#dont use hosts nameservers
+no-resolv
+#use cloudflare as default nameservers, prefer 1^4
+server=1.0.0.1
+server=1.1.1.1
+strict-order
+conf-dir=/etc/dnsmasq.d/,*.conf

containers/docker-compose.dns.yml

@@ -0,0 +1,15 @@
+version: '3.5'
+services:
+  dns:
+    image: liip/pontsun-dnsmasq:latest
+    container_name: pontsun_dns
+    restart: always
+    volumes:
+      - "$PONTSUN_DIR_ETC/dnsmasq.d/:/etc/dnsmasq.d/"
+    ports:
+      - 53:53/udp
+    networks:
+      - pontsun
+    logging:
+      options:
+        max-size: 20m

docs/docker-installation-for-mac.md

@@ -30,30 +30,37 @@ gem install docker-sync
 
 ## Dnsmasq
 
-Dnsmasq will automatically forward any **\*.docker.lo** domain to our
+Dnsmasq will automatically forward any **\*.pontsun.test** domain to our
 local docker infrastructure.
 
 ```
 brew install dnsmasq
 ```
 
 ```
-mkdir -pv $(brew --prefix)/etc/
-echo 'address=/docker.lo/127.0.0.1' > $(brew --prefix)/etc/dnsmasq.conf
-echo 'strict-order' >> $(brew --prefix)/etc/dnsmasq.conf
+mkdir -pv $(brew --prefix)/etc/dnsmasq.d/
+echo 'strict-order' > $(brew --prefix)/etc/dnsmasq.conf
+echo 'conf-dir='$(brew --prefix)'/etc/dnsmasq.d/,*.conf' >> $(brew --prefix)/etc/dnsmasq.conf
 ```
 
+and then 
 ```
-sudo cp -v $(brew --prefix dnsmasq)/homebrew.mxcl.dnsmasq.plist /Library/LaunchDaemons
-sudo launchctl load -w /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist
-```
-
-
+./scripts/add-host.sh pontsun.test
 ```
+or if you prefer to do it by hand
+``` 
+echo address=/$1/127.0.0.1 > $(brew --prefix)/dnsmasq.d/pontsun.test.conf
+echo 'strict-order' >> $(brew --prefix)/dnsmasq.d/pontsun.test.conf
 sudo mkdir -v /etc/resolver
 sudo bash -c 'echo "nameserver 127.0.0.1" > /etc/resolver/docker.lo'
 ```
 
+and in the end
+```
+sudo cp -v $(brew --prefix dnsmasq)/homebrew.mxcl.dnsmasq.plist /Library/LaunchDaemons
+sudo launchctl load -w /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist
+```
+
 ## Pontsun
 
 Pontsun provides the base setup for Docker environments.

docs/docker-installation-for-ubuntu.md

@@ -21,9 +21,18 @@ sudo apt-get install dnsmasq
 
 ```
 mkdir -pv /etc/dnsmasq.d/
-echo 'address=/docker.lo/127.0.0.1'  | sudo tee /etc/dnsmasq.d/docker
-echo 'strict-order'  | sudo tee --append /etc/dnsmasq.d/docker
 ```
+and then 
+```
+./scripts/add-host pontsun.test
+```
+
+or if you prefer to do it by hand
+```
+echo 'address=/pontsun.test/127.0.0.1'  | sudo tee /etc/dnsmasq.d/pontsun.test.conf
+echo 'strict-order'  | sudo tee --append /etc/dnsmasq.d/pontsun.test.conf
+```
+
 ## Pontsun
 
 Pontsun provides the base setup for Docker environments.  

scripts/add-host.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+PONTSUN_DNS=$(docker inspect -f '{{.State.Running}}' pontsun_dns 2> /dev/null || echo 'false')
+
+if [[ $PONTSUN_DNS == 'true' ]]; then
+    DOCKER_COMPOSE="docker-compose -f docker-compose.yml -f docker-compose.dns.yml"
+    cd $DIR/../containers/
+    if $DOCKER_COMPOSE exec dns ash -c "if [[ -f  /etc/dnsmasq.d/$1.conf ]]; then exit 1; fi; echo address=/$1/127.0.0.1 > /etc/dnsmasq.d/$1.conf"
+    then
+       $DOCKER_COMPOSE restart dns
+    fi
+else
+    # no DNS container.
+    # write it to system dnsmasq
+
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+      ETC_PREFIX=$(brew --prefix)'/etc'
+    else
+      ETC_PREFIX='/etc'
+    fi
+
+    if [[ ! -d  $ETC_PREFIX/dnsmasq.d/ ]]; then
+        RED='\033[0;31m'
+        NC='\033[0m' # No Color
+
+        printf "${RED}pontsun_dns is not running and can't find $ETC_PREFIX/dnsmasq.d${NC}\n"
+        printf "Please install dnsmasq locally or start potsun_dns"
+        exit 1
+    fi
+
+    if [[ ! -f  $ETC_PREFIX/dnsmasq.d/$1.conf ]]; then
+      if [[ "$OSTYPE" == "darwin"* ]]; then
+        echo address=/$1/127.0.0.1 > $ETC_PREFIX/dnsmasq.d/$1.conf
+        echo 'strict-order' >> $ETC_PREFIX/dnsmasq.d/$1.conf
+      else
+        echo address=/$1/127.0.0.1 | sudo tee $ETC_PREFIX/dnsmasq.d/$1.conf
+        echo 'strict-order' | sudo tee --append $ETC_PREFIX/dnsmasq.d/$1.conf
+      fi
+      echo "dnsmasq entry updated, you may restart it to take effect."
+    else
+      echo "No dnsmasq changes done, $ETC_PREFIX/dnsmasq.d/$1.conf already exists."
+    fi
+fi
+
+if [[ "$OSTYPE" == "darwin"* ]] && [[ ! -f /etc/resolver/$1 ]]; then
+    echo "Adding to /etc/resolver/$1"
+    sudo mkdir -vp /etc/resolver
+    sudo bash -c "echo 'nameserver 127.0.0.1' > /etc/resolver/$1"
+fi