Merge pull request #220 from cedarcode/nt--fix-deploy

Fix deployment

Author: nicolastemciuc

Dockerfile

@@ -21,7 +21,8 @@ ENV RAILS_ENV="production" \
 FROM base as build
 
 # Install packages needed to build gems
-RUN apt-get install --no-install-recommends -y build-essential git pkg-config
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y build-essential git libyaml-dev pkg-config
 
 # Install application gems
 COPY .ruby-version Gemfile Gemfile.lock ./