Tried deploying on render but all i get is 502.
# Dockerfile
FROM node:22.17.0-slim AS base
FROM base AS deps
WORKDIR /app
COPY package.json pnpm-lock.yaml ./
RUN corepack enable pnpm && pnpm install --frozen-lockfile
RUN \
if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
elif [ -f package-lock.json ]; then npm ci; \
elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
else echo "Lockfile not found." && exit 1; \
fi
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN \
if [ -f yarn.lock ]; then yarn run build; \
elif [ -f package-lock.json ]; then npm run build; \
elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
else echo "Lockfile not found." && exit 1; \
fi
FROM base AS runner
WORKDIR /app
ENV NODE_ENV=production
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs
RUN mkdir .next
RUN chown nextjs:nodejs .next
RUN chown -R nextjs:nodejs /app
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
USER nextjs
EXPOSE 3000
CMD ["node", "server.js"]
this Dockerfile builds into image that works on me locally, but on initial deploy, i got errors on it not being able to connect to mongodb, after making my mongodb public, the error disappeared.