Add Dockerfile for easy hosting TavernAI-GUI on multiple platforms.

Implements #18

Dockerfile

@@ -0,0 +1,35 @@
+FROM node:19.1.0-alpine3.16
+
+# Arguments
+ARG APP_HOME=/home/node/app
+
+# Create app directory
+WORKDIR ${APP_HOME}
+
+
+# Install app dependencies
+COPY package*.json ./
+RUN \
+  echo "*** Install npm packages ***" && \
+  npm install
+
+# Bundle app source
+COPY . .
+
+# Copy default chats, characters and user avatars to <folder>.default folder
+RUN \
+  echo "*** Copy default chats, characters and user avatars to <folder>.default folder ***" && \
+  mv "./public/chats"         "./public/chats.default" && \
+  mv "./public/characters"    "./public/characters.default" && \
+  mv "./public/User Avatars"  "./public/User Avatars.default"
+
+# Cleanup unnecessary files
+RUN \
+  echo "*** Cleanup ***" && \
+  mv "./docker/docker-entrypoint.sh" "./" && \
+  rm -rf "./docker" && \
+  rm -rf "./.git"
+
+EXPOSE 8000
+
+ENTRYPOINT [ "/bin/sh", "-c", "./docker-entrypoint.sh" ]