chore: initialize frontend repo with teaching terminology updates

Add the current frontend codebase with a baseline .gitignore and update piano-specific UI terms to teaching-oriented terms for the current product context.

Made-with: Cursor

container/Dockerfile

@@ -0,0 +1,20 @@
+# build
+FROM node:12-alpine
+COPY . /root/website
+WORKDIR /root/website
+RUN yarn && yarn run build
+
+# serve
+FROM nginx:1.19.6-alpine
+# setup timezone
+RUN apk update && apk add tzdata sed bash
+RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
+RUN echo 'Asia/Shanghai' > /etc/timezone
+RUN mkdir -p /root/logs /run/nginx/
+# copy scripts
+COPY container/*.sh /root/
+RUN ls /root
+COPY container/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=0 /root/website/dist /home/nginx/website
+RUN /root/setup.sh
+ENTRYPOINT /root/init.sh