chore(docker): Added docker image support

chore(docker): Implements Dockerfile for building images.
chore(docker): Implements dockerignore file
chore(docker): Implements docker image CI
chore(docker): Enabling docker CI in docker-support branch to test build process
chore(docker): Added docker image artifact upload support
fix(docker): Added static docker image label for uploading
chore(docker): Changed base image to `python:3.8-alpine`
chore(docker): Added license header
chore(docker): Removed `docker-support` branch
chore(docker): Updated authors

.dockerignore

@@ -0,0 +1,5 @@
+.git
+.gitignore
+Dockerfile*
+docker-compose*
+.vscode

.github/workflows/docker-image.yml

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+name: Docker Image CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag nirjas:latest
+
+    - name: Upload image
+      uses: ishworkh/docker-image-artifact-upload@v1
+      with:
+        image: "nirjas:latest"

Dockerfile

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+# Copyright (C) 2020  Ayush Bhardwaj (classicayush@gmail.com),
+# Kaushlendra Pratap (kaushlendrapratap.9837@gmail.com)
+# Aswin Murali (aswinmurali.co@gmail.com)
+#
+# SPDX-License-Identifier: LGPL-2.1
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# Docker image for nirjas
+# 
+# Build
+#   docker build -t nirjas .
+#
+# Run
+#   docker run --rm -it nirjas
+#   docker run --rm -it nirjas nirjas <args>
+
+FROM python:3.8-alpine
+
+COPY . ./
+
+RUN python3 setup.py install
+
+# Default command as intro text
+
+CMD [ "nirjas" , "-h" ]