create default hosts files if missing, add base64 to gemfile

Dockerfile

@@ -5,16 +5,16 @@ LABEL maintainer="Mike Glenn <[email protected]>"
 LABEL ilude-project=joyride
 
 RUN \
-  mkdir -p /app /etc/hosts.d /etc/dnsmasq.d \
-  && { \
-  echo 'install: --no-document'; \
-  echo 'update: --no-document'; \
-  } >> /etc/gemrc \
-  && apk add --no-cache \
-  bash \
-  dnsmasq \
-  shadow \
-  tzdata \
+  mkdir -p /app /etc/hosts.d /etc/dnsmasq.d && \
+  touch /etc/hosts.d/hosts && \
+  touch /etc/dnsmasq.d/hosts && \
+  echo 'install: --no-document' >> /etc/gemrc && \
+  echo 'update: --no-document' >> /etc/gemrc && \ 
+  apk add --no-cache \
+    bash \
+    dnsmasq \
+    shadow \
+    tzdata \
   && rm -rf \
     /usr/lib/ruby/gems/*/cache/* \
     /root/.gem/ \

app/Gemfile

@@ -1,4 +1,5 @@
 source 'https://rubygems.org'
 
+gem 'base64'
 gem 'docker-api'
 gem 'rufus-scheduler'

app/joyride.rb

@@ -16,10 +16,17 @@
 
 locator = {}
 
-log = Logger.new($stdout) 
+log = Logger.new($stdout)
 log.formatter = proc { |severity, datetime, progname, msg| "#{msg}\n" }
 
-generator = Joyride::DnsGenerator.new(log) 
+file_path = "/etc/hosts.d/hosts"
+begin
+  File.new(file_path, "w") if !File.exist?(file_path)
+rescue => ex
+  log.warn("Error creating file: #{ex.message}")
+end
+
+generator = Joyride::DnsGenerator.new(log)
 context = Joyride::Context.new(log)
 
 define_singleton_method("log") { log }
@@ -29,16 +36,16 @@
 
 scheduler.every '3s', :first => :now, :mutex => context.mutex do
   Docker::Event.since(context.updated_at, until: Time.now.to_i) {|event| context.process_event(event)}
-  
+
   if context.dirty?
     generator.process(context)
     context.reset()
   end
 end
 
-Kernel.trap( "INT" ) do 
+Kernel.trap( "INT" ) do
   scheduler.shutdown
   log.info "Joyride has ended!"
 end
 
-scheduler.join()
+scheduler.join()