Merge pull request #623 from cedarcode/nt--fix-deploy

Fix deploy

Author: nicolastemciuc

Dockerfile

@@ -27,7 +27,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential git libpq-dev pkg-config && \
+    apt-get install --no-install-recommends -y build-essential git libpq-dev libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems