Change Dockerfile script

Dockerfile

@@ -1,21 +1,19 @@
-FROM ubuntu:14.04
-MAINTAINER Gravebot
+FROM ubuntu:18.04
 
 # Setup system deps
-RUN apt-get update
-RUN apt-get -y install build-essential curl rsync tar python python-pip git libfontconfig1
+RUN apt update
+RUN apt -y install wget build-essential curl rsync tar python3.8 python3-pip git libfontconfig1
 
 # Setup Node
-ENV NODE_VERSION 4.4.2
-ENV NPM_VERSION 3.8.5
+ENV NODE_VERSION 5.12.0
 
 RUN git clone https://github.com/creationix/nvm.git /.nvm
 RUN echo "source /.nvm/nvm.sh" >> /etc/bash.bashrc
 RUN /bin/bash -c 'source /.nvm/nvm.sh && nvm install $NODE_VERSION && nvm use $NODE_VERSION && nvm alias default $NODE_VERSION && ln -s /.nvm/versions/node/v$NODE_VERSION/bin/node /usr/local/bin/node && ln -s /.nvm/versions/node/v$NODE_VERSION/bin/npm /usr/local/bin/npm'
-RUN npm install -g npm@$NPM_VERSION
 
 # Setup dockerize
-RUN pip install dockerize
+RUN pip3 install --upgrade pip
+RUN pip3 install git+https://github.com/larsks/dockerize
 
 # Copy package.json
 COPY ./package.json /app/