Update configs. (#4)

Dockerfile

@@ -3,8 +3,8 @@ FROM ubuntu:latest
 COPY . /dot
 ENV TERM=xterm-256color
 # Install additional packages we need
-RUN apt update -y && apt upgrade -y
-RUN apt install -y git stow vim tmux ranger clang wget curl golang-go
+RUN bash -c '. /dot/.bash_aliases && apt update -y && apt install -y $DOT_PACKAGES fontconfig'
+RUN apt upgrade -y
 RUN go install github.com/arl/gitmux@latest
 # Update submodules for plugins
 RUN cd /dot && git submodule update --init && cp .gitmux.conf.docker .gitmux.conf