Fix local execution of some dev tools

Makefile

@@ -1,5 +1,5 @@
 watch: clean install build
-	docker-compose up -d
+	docker-compose up -d php node-sass
 
 clean:
 	rm -rf output_dev/*

docker-compose.yml

@@ -19,6 +19,7 @@ services:
   ruby:
     build:
       context: docker/ruby
+    user: 1000:1000
     working_dir: /fig-website
     volumes:
       - .:/fig-website

docker/ruby/Dockerfile

@@ -1,5 +1,8 @@
 FROM ruby:2.3-alpine3.7
 
 RUN apk add --no-cache \
+        build-base \
         curl \
+        libffi-dev \
+        libzip-dev \
         zip