Added basic Docker support

Dockerfile

@@ -0,0 +1,7 @@
+FROM node:lts-alpine
+RUN adduser jira-clone --gecos GECOS --shell /bin/bash --disabled-password --home /app
+COPY . /app
+WORKDIR /app
+RUN npm run install-dependencies && \
+    cp -v /app/docker/entrypoint.sh /usr/bin/entrypoint
+ENTRYPOINT ["entrypoint"]