update Docker file, add start.sh

Dockerfile

@@ -7,7 +7,7 @@ ARG NEXT_PUBLIC_PORTAL_BASENAME
 
 WORKDIR /gen3
 
-COPY ./package.json ./package-lock.json ./next.config.js ./tsconfig.json ./.env.development  ./tailwind.config.js ./postcss.config.js  ./
+COPY ./package.json ./package-lock.json ./next.config.js ./tsconfig.json ./.env.development  ./tailwind.config.js ./postcss.config.js ./start.sh ./
 RUN npm ci
 COPY ./src ./src
 COPY ./public ./public
@@ -23,6 +23,7 @@ WORKDIR /gen3
 RUN addgroup --system --gid 1001 nextjs && \
     adduser --system --uid 1001 nextjs
 USER nextjs
+COPY --from=builder --chown=nextjs:nextjs /gen3/start.sh ./
 COPY --from=builder --chown=nextjs:nextjs /gen3/config ./config
 COPY --from=builder --chown=nextjs:nextjs /gen3/public ./public
 COPY --from=builder --chown=nextjs:nextjs /gen3/.next/standalone ./