Added Dockerfile template and initial README.

Dockerfile

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+# Step 1: Initial build using the `yarn build` command
+####################################################
+FROM node:latest as build
+
+# Prepare the build directory
+RUN mkdir -p /opt/build;
+
+WORKDIR /opt/build
+
+# If your build step requires environment variables too, add them here
+
+# Copy required files
+# Note: I specify each file directly here to avoid copying over
+# existing /dist folder or other dev files like .env
+COPY ./src ./src
+COPY [ "package.json", "yarn.lock", "tsconfig.json", "./" ]
+
+RUN yarn install --no-progress && yarn build
+
+
+# Step 2: Fetch production-only dependencies
+####################################################
+FROM node:latest as dependencies
+
+# Set environment to production
+ENV NODE_ENV='production'
+
+RUN mkdir -p /opt/build;
+
+WORKDIR /opt/build
+
+COPY --from=build [ "/opt/build/package.json", "/opt/build/yarn.lock", "./" ]
+
+RUN yarn install --production=true --no-progress
+
+
+# Step 3: Build done, create the deployable/runnable image step
+####################################################
+FROM node:slim as release
+
+# Set environment to production
+ENV NODE_ENV='production'
+
+# Prepare the app directory
+RUN mkdir -p /opt/app;
+
+WORKDIR /opt/app
+
+# Add any and all environment variables your application needs here:
+ENV JWT_SECRET= \
+    PORT=80
+
+# Copy dependencies and compiled application from previous steps
+COPY --from=dependencies /opt/build/node_modules /opt/app/node_modules
+COPY --from=build /opt/build/dist /opt/app/dist
+
+WORKDIR /opt/app
+
+# Run the application using node
+ENTRYPOINT [ "node", "dist/index.js" ]
+
+# Alternatively: Run your application using Forever (ensure this is installed as a dependency first)
+# See: https://github.com/foreversd/forever
+# ENTRYPOINT [ "./node_modules/.bin/forever", "./dist/index.js" ]