a PoC for using "pg_upgrade" inside Docker -- learn from it, adapt it for your needs; don't expect it to work as-is!

Postgres 18 with wal-g. The docker image doesn't have any volume declarations and uses uid 1000 to ease the support of pg_upgrade.

n8n Manager — Install • Upgrade • Backup • Restore on Docker Compose (Traefik, Postgres, Redis), with support for single & queue modes.

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Script to upgrade Postgres database from version 13 to 16 running in a container via docker compose

Ansible playbook to upgrade a dockerized postgres

PostgreSQL 12 to 16 upgrade on Centos 8 using Docker

A ready-to-run WhatsApp bot for residential canteens. Members can view the menu, book breakfast/lunch/dinner, see my bookings, and cancel (with a cutoff). Includes a daily “tomorrow’s menu” broadcast, CSV seeding, and an optional Postgres upgrade. Built with Python + Flask + WhatsApp Cloud API, deployable to Render/Railway/Docker in minutes.

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Some resources to (maybe) help use pg_upgrade with postgres running in a container.

Docker image to help with postgres upgrades

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Build docker image for upgrading postgres databases

Upgrades the PostgreSQL major version in a Docker Compose project

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This shows how to upgrade the official postgres docker containers.

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A docker container for spinning up a postgres instance, which works with flask migrations and can upgrade the database using the migrations in a flask project.

Real-time ride-sharing analytics with Kafka, Spark, Postgres & Streamlit. Upgrading with open-source GenAI RAG (Mistral + LangChain) for conversational data queries—ask questions in natural language, get intelligent anomaly explanations, and auto-generate insights. Docker-based, privacy-first, zero API costs.