feat: modernized web application

nextjs/Dockerfile

@@ -0,0 +1,66 @@
+# syntax=docker/dockerfile:1
+#
+# Target: linux/arm64 (ARMv8 / aarch64). Build from the repository root:
+#   docker build -f nextjs/Dockerfile -t catherine-league-web .
+# Cross-build from amd64 (optional, requires QEMU/binfmt, e.g. Docker Desktop / buildx):
+#   docker buildx build --platform linux/arm64 -f nextjs/Dockerfile -t catherine-league-web .
+#
+# Run (set DB_* env vars as needed):
+#   docker run --rm -p 3000:3000 \
+#     -e DB_ENDPOINT=host.docker.internal \
+#     -e DB_PORT=3306 \
+#     -e DB_USER=... \
+#     -e DB_PASS=... \
+#     catherine-league-web
+
+FROM arm64v8/node:24-alpine AS deps
+RUN apk add --no-cache libc6-compat
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+COPY nextjs/package.json ./nextjs/
+
+RUN npm ci
+
+FROM arm64v8/node:24-alpine AS builder
+RUN apk add --no-cache libc6-compat
+
+WORKDIR /app
+
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/package.json ./package.json
+COPY --from=deps /app/package-lock.json ./package-lock.json
+COPY nextjs ./nextjs
+
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN npm run build -w catherine-league-nextjs
+
+FROM arm64v8/node:24-alpine AS runner
+RUN apk add --no-cache libc6-compat
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN addgroup --system --gid 1001 nodejs \
+  && adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/nextjs/public ./nextjs/public
+COPY --from=builder /app/nextjs/.next/standalone ./
+COPY --from=builder /app/nextjs/.next/static ./nextjs/.next/static
+
+RUN chown -R nextjs:nodejs /app
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
+
+WORKDIR /app/nextjs
+
+CMD ["node", "server.js"]