Update Dockerfile

Dockerfile

@@ -4,6 +4,8 @@ RUN localedef -i en_DK -f UTF-8 en_DK.UTF-8 \
  && echo "LANG=en_DK.UTF-8" > /etc/locale.conf \
  && export LANG=en_DK.UTF-8
 
+RUN curl -sL https://rpm.nodesource.com/setup_14.x | bash -
+RUN yum -y install nodejs
 RUN yum -y install epel-release
 RUN yum -y update
 RUN yum -y install \
@@ -23,14 +25,12 @@ RUN yum -y install \
     readline-devel \
     rpm-build \
     rsync \
-    ruby \
     sqlite-devel \
     vim \
     wget \
     which \
     zlib-devel \
  && yum clean all
- RUN curl -sL https://rpm.nodesource.com/setup_14.x | bash -
 
 # Install RVM
 RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys \