diff --git a/Makefile b/Makefile
index 968631a..f1d6cac 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,9 @@
-build: shard.yml src/*
+build: shard.yml $(wildcard src/**/*cr)
 	shards build
 proxy-image: build
 	docker build . -t faaso-proxy --no-cache
 start-proxy:
-	docker run --network=faaso-net -v /var/run/docker.sock:/var/run/docker.sock -p 8888:8888 -p 3000:3000 faas
-o-proxy
+	docker run --network=faaso-net -v /var/run/docker.sock:/var/run/docker.sock -p 8888:8888 -p 3000:3000 faaso-proxy
+
+
+.PHONY: build proxy-image start-proxy
diff --git a/runtimes/crystal/main.cr b/runtimes/crystal/main.cr
index e719143..20c87cb 100644
--- a/runtimes/crystal/main.cr
+++ b/runtimes/crystal/main.cr
@@ -2,7 +2,7 @@ require "kemal"
 require "./funko.cr"
 
 get "/ping/" do
-    "OK"
+  "OK"
 end
 
 Kemal.run
diff --git a/src/faaso.cr b/src/faaso.cr
index 79bb84e..52f0ffb 100644
--- a/src/faaso.cr
+++ b/src/faaso.cr
@@ -85,34 +85,20 @@ module Faaso
           container_name = "faaso-#{funko.name}"
           docker_api = Docr::API.new(Docr::Client.new)
 
-          # Get image history, sorted newer image first
-          begin
-            images = docker_api.images.history(
-              name: funko.name
-            ).sort { |a, b| b.@created <=> a.@created }.map(&.@id)
-          rescue ex : Docr::Errors::DockerAPIError
+          images = funko.image_history
+          if images.empty?
             puts "Error: no images available for #{funko.name}:latest"
-            puts ex
             next
           end
 
-          latest_image = images[0]
-
-          # Filter by name so only faaso-thisfunko are affected from now on
-          # sorted newer image first
-          containers = docker_api.containers.list(
-            all: true,
-            filters: {"name" => [container_name]}
-          ).sort { |a, b| (images.index(b.@image_id) || 9999) <=> (images.index(a.@image_id) || 9999) }
+          # sort list of funko containers newer image first
+          containers = funko.containers.sort { |a, b|
+            (images.index(b.@image_id) || 9999) <=> (images.index(a.@image_id) || 9999)
+          }
 
           # If it's already up, do nothing
-          if containers.any? { |container|
-               is_running = container.@state == "running"
-               is_old = container.@image_id != latest_image
-               p! container.@image_id
-               puts "Warning: running outdated version" if is_running && is_old
-               is_running
-             }
+          # FIXME: bring back out-of-date warning
+          if funko.running?
             puts "#{funko.name} is already up"
             next
           end
diff --git a/src/funko.cr b/src/funko.cr
index bcbbb19..2e1c573 100644
--- a/src/funko.cr
+++ b/src/funko.cr
@@ -26,6 +26,7 @@ class Funko
   @[YAML::Field(ignore: true)]
   property path : String = ""
 
+  # Create an Array of funkos from an Array of folders containing definitions
   def self.from_paths(paths : Array(String | Path)) : Array(Funko)
     paths.map { |path| Path.new(path, "funko.yml") }
       .select { |path| File.exists?(path) }
@@ -35,4 +36,33 @@ class Funko
         f
       }
   end
+
+  # Return a list of image IDs for this funko, most recent first
+  def image_history
+    docker_api = Docr::API.new(Docr::Client.new)
+    begin
+      docker_api.images.history(
+        name: name
+      ).sort { |i, j| j.@created <=> i.@created }.map(&.@id)
+    rescue ex : Docr::Errors::DockerAPIError
+      puts "Error: #{ex}"
+      [] of String
+    end
+  end
+
+  # Get all containers related to this funko
+  def containers
+    docker_api = Docr::API.new(Docr::Client.new)
+    docker_api.containers.list(
+      all: true,
+      filters: {"name" => ["faaso-#{name}"]}
+    )
+  end
+
+  # Is this funko running?
+  def running?
+    self.containers.any? { |container|
+      container.@state == "running"
+    }
+  end
 end