Update all docker images to include drill (for unit tests)

test/Dockerfile-alpine

@@ -2,7 +2,7 @@ FROM alpine:latest
 
 # Note this image uses busybox awk instead of gawk
 
-RUN apk --no-cache add supervisor openssl git curl bind-tools wget nginx bash
+RUN apk --no-cache add supervisor openssl git curl bind-tools drill wget nginx bash
 
 WORKDIR /root
 

test/Dockerfile-centos6

@@ -8,7 +8,7 @@ FROM centos:centos6
 # Update and install required software
 RUN yum -y update
 RUN yum -y install epel-release
-RUN yum -y install git curl dnsutils wget nginx
+RUN yum -y install git curl dnsutils ldns wget nginx
 
 WORKDIR /root
 RUN mkdir /etc/nginx/pki

test/Dockerfile-centos7

@@ -1,11 +1,9 @@
 FROM centos:centos7
 
-# Note this image uses drill, does not have dig or nslookup installed
-
 # Update and install required software
 RUN yum -y update
 RUN yum -y install epel-release
-RUN yum -y install git curl ldns wget which nginx
+RUN yum -y install git curl ldns bind-utils wget which nginx
 
 WORKDIR /root
 RUN mkdir /etc/nginx/pki

test/Dockerfile-centos7-staging

@@ -5,7 +5,7 @@ FROM centos:centos7
 # Update and install required software
 RUN yum -y update
 RUN yum -y install epel-release
-RUN yum -y install git curl bind-utils wget which nginx
+RUN yum -y install git curl bind-utils ldns wget which nginx
 
 ENV staging "true"
 ENV DUCKDNS_TOKEN 1d616aa9-b8e4-4bb4-b312-3289de82badb

test/Dockerfile-debian

@@ -4,7 +4,7 @@ FROM debian:latest
 
 # Update and install required software
 RUN apt-get update --fix-missing
-RUN apt-get install -y git curl dnsutils wget nginx-light
+RUN apt-get install -y git curl dnsutils ldnsutils wget nginx-light
 
 WORKDIR /root
 RUN mkdir /etc/nginx/pki

test/Dockerfile-ubuntu

@@ -7,7 +7,7 @@ ENV DEBIAN_FRONTEND noninteractive
 
 # Update and install required software
 RUN apt-get update --fix-missing
-RUN apt-get install -y git curl dnsutils wget nginx-light
+RUN apt-get install -y git curl dnsutils ldnsutils wget nginx-light
 RUN apt-get install -y vim dos2unix # for debugging
 # TODO test with drill, dig, host
 

test/Dockerfile-ubuntu-staging

@@ -11,9 +11,8 @@ ENV DUCKDNS_TOKEN 1d616aa9-b8e4-4bb4-b312-3289de82badb
 
 # Update and install required software
 RUN apt-get update --fix-missing
-RUN apt-get install -y git curl dnsutils wget nginx-light
+RUN apt-get install -y git curl dnsutils ldnsutils wget nginx-light
 RUN apt-get install -y vim dos2unix # for debugging
-# TODO test with drill, dig, host
 
 WORKDIR /root
 

test/Dockerfile-ubuntu16

@@ -5,16 +5,13 @@ FROM ubuntu:xenial
 
 # Update and install required software
 RUN apt-get update --fix-missing
-RUN apt-get install -y git curl dnsutils wget nginx-light
+RUN apt-get install -y git curl dnsutils ldnsutils wget nginx-light
 
 WORKDIR /root
 RUN mkdir /etc/nginx/pki
 RUN mkdir /etc/nginx/pki/private
 COPY ./test/test-config/nginx-ubuntu-no-ssl /etc/nginx/sites-enabled/default
 
-# Prevent "Can't load /root/.rnd into RNG" error from openssl
-# RUN touch /root/.rnd
-
 # BATS (Bash Automated Testings)
 RUN git clone https://github.com/bats-core/bats-core.git /bats-core
 RUN git clone https://github.com/bats-core/bats-support /bats-support

test/Dockerfile-ubuntu18

@@ -5,7 +5,7 @@ FROM ubuntu:bionic
 
 # Update and install required software
 RUN apt-get update --fix-missing
-RUN apt-get install -y git curl dnsutils wget gawk nginx-light
+RUN apt-get install -y git curl dnsutils ldnsutils wget gawk nginx-light
 
 WORKDIR /root
 RUN mkdir /etc/nginx/pki