add dockerfiles for basebox with tmux and default user

tmux/alpinelinux/Dockerfile

@@ -0,0 +1,14 @@
+FROM alpinelinux/base
+MAINTAINER encrypt <encrypt@labr.xyz>
+
+RUN apk update && \
+    apk add tmux sudo
+
+RUN adduser user -D && \
+    echo "user:default" | chpasswd && \
+    echo "user ALL=(ALL) ALL" >> /etc/sudoers
+
+USER user
+
+CMD ["/bin/bash"]
+    

tmux/archlinux/Dockerfile

@@ -0,0 +1,14 @@
+FROM base/archlinux
+MAINTAINER encrypt <encrypt@labr.xyz>
+
+RUN pacman -Syu --noconfirm && \
+    pacman-db-upgrade && \
+    pacman -S --noconfirm tmux sudo
+
+RUN echo "%wheel ALL=(ALL) ALL" >> /etc/sudoers && \
+    useradd user -m -G wheel && \
+    echo "user:default" | chpasswd
+
+USER user
+
+CMD ["/bin/bash"]

tmux/ubuntu/Dockerfile

@@ -0,0 +1,12 @@
+FROM ubuntu:latest
+MAINTAINER encrypt <encrypt@labr.xyz>
+
+RUN apt-get update && \
+    apt-get install -y tmux
+
+RUN useradd user -m -G sudo && \
+    echo "user:default" | chpasswd
+
+USER user
+
+CMD ["/bin/bash"]