Updated Dockerfile.

Getting Started with Self-Hosting.dockerfile

@@ -1 +1,40 @@
 Code samples & snippets coming soon!
+
+#
+# Ubuntu 
+#
+
+# Pull base image.
+FROM ubuntu:22.04
+
+# Install.
+RUN \
+  sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
+  apt-get update && \
+  apt-get -y upgrade && \
+  apt-get install -y build-essential && \
+  apt-get install -y software-properties-common && \
+  apt-get install -y byobu curl git htop man unzip vim wget && \
+  rm -rf /var/lib/apt/lists/*
+
+# Add files.
+ADD root/.bashrc /root/.bashrc
+ADD root/.gitconfig /root/.gitconfig
+ADD root/.scripts /root/.scripts
+
+# Set environment variables.
+ENV HOME /root
+
+# Define working directory.
+WORKDIR /root
+
+# Define default command.
+CMD ["bash"]
+
+# Checking APT Cache
+
+FROM ubuntu:22.04
+RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
+RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
+  --mount=type=cache,target=/var/lib/apt,sharing=locked \
+  apt update && apt-get --no-install-recommends install -y gcc