feat: add Telegram album purchase bot

Dockerfile

@@ -1,60 +1,43 @@
-# Multi-stage build for Next.js application with Bun
+ARG BUN_VERSION=1.3.11
 
-# Stage 1: Dependencies
-FROM oven/bun:1-alpine AS deps
+FROM oven/bun:${BUN_VERSION}-alpine AS base
 WORKDIR /app
 
-# Copy package files
-COPY package.json bun.lockb* ./
+ENV NEXT_TELEMETRY_DISABLED=1
 
-# Install dependencies with Bun
+FROM base AS dependencies
+
+COPY package.json bun.lock ./
 RUN bun install --frozen-lockfile
 
-# Stage 2: Builder
-FROM oven/bun:1-alpine AS builder
-WORKDIR /app
+FROM base AS builder
 
-# Copy dependencies from deps stage
-COPY --from=deps /app/node_modules ./node_modules
+ENV NODE_ENV=production
+
+COPY --from=dependencies /app/node_modules ./node_modules
 COPY . .
 
-# Set environment variables for build
-ENV NEXT_TELEMETRY_DISABLED=1
-ENV NODE_ENV=production
+# package.json forces the Next.js CLI to execute with Bun.
+RUN bun run build
 
-# Build the application with --bun flag to use Bun runtime
-RUN bun --bun run build
+FROM base AS runner
 
-# Stage 3: Runner
-FROM oven/bun:1-alpine AS runner
-WORKDIR /app
+ENV NODE_ENV=production \
+    HOSTNAME=0.0.0.0 \
+    PORT=3000
 
-ENV NODE_ENV=production
-ENV NEXT_TELEMETRY_DISABLED=1
+COPY --from=builder --chown=bun:bun /app/public ./public
+COPY --from=builder --chown=bun:bun /app/.next/standalone ./
+COPY --from=builder --chown=bun:bun /app/.next/static ./.next/static
 
-# Create a non-root user
-RUN addgroup --system --gid 1001 nodejs
-RUN adduser --system --uid 1001 nextjs
+# bun:sqlite writes the database and WAL files here.
+RUN mkdir -p /app/data && chown -R bun:bun /app/data
 
-# Copy necessary files from builder
-COPY --from=builder /app/public ./public
-COPY --from=builder /app/.next/standalone ./
-COPY --from=builder /app/.next/static ./.next/static
+USER bun
 
-# Create data directory for SQLite database
-RUN mkdir -p /app/data && chown -R nextjs:nodejs /app/data
-
-# Change ownership to nextjs user
-RUN chown -R nextjs:nodejs /app
-
-# Switch to non-root user
-USER nextjs
-
-# Expose port 3000
 EXPOSE 3000
 
-ENV PORT=3000
-ENV HOSTNAME="0.0.0.0"
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD bun -e "fetch('http://127.0.0.1:3000').then(response => process.exit(response.ok ? 0 : 1)).catch(() => process.exit(1))"
 
-# Start the application with Bun runtime
-CMD ["bun", "--bun", "run", "server.js"]
+CMD ["bun", "server.js"]