I almost retired my old PC until these 5 lightweight Docker containers gave it a purpose

I had an old PC gathering dust in a corner, and I was contemplating retiring it for good. Its outdated hardware couldn't cope with my demanding workload, and upgrading it financially didn't seem feasible. Instead of discarding it, I decided to give it a final chance with Docker. Despite my low expectations, I discovered the true potential of an old machine.

One container I wanted to run was Memos, a lightweight, open-source note-taking tool with a timeline-based interface. It made capturing thoughts effortless without the hassle of creating folders, selecting templates, or organizing content beforehand. Memos supports Markdown, tags, attachments, search, and custom views, allowing me to access my notes anytime through a browser. Its minimal resource requirements made it an ideal choice for aging hardware.

Another useful container was AdGuard Home, which protected my entire home network from ads, tracking, and malicious domains. By configuring my router to use AdGuard Home as the DNS server, compatible devices on my network automatically benefited from its filtering rules. I could customize blocklists, inspect DNS queries, block specific websites, and configure encrypted upstream DNS servers. Its dashboard provided statistics on blocked requests.

Kavita, a Gujarati word meaning poem, gave me a convenient way to organize my ebook, PDF, and other reading materials. Acting as my personal digital library, it supported popular formats like EPUB, PDF, CBZ, and CBR. I could access my library from any device through a browser, view my reading progress, organize books into collections, and customize themes. Kavita's minimal resource needs made it a practical option for my modest hardware.

Grocy, an unexpected addition to my Docker setup, helped me manage my household activities. This open-source tool handled grocery inventories, shopping lists, meal planning, and household chores under one roof. It supported barcode scanning, recipes, recurring chores, and tracking household items, all accessible through a browser-based interface on my phone or tablet. Grocy's manageable memory footprint made it a sensible choice for my old PC.

Finally, File Browser transformed my aging machine into a simple file server. It allowed me to access and manage stored files through a clean, browser-based interface. Using an embedded database, File Browser required minimal resources, making it an efficient alternative to heavyweight cloud storage services. I could upload, download, rename, move, organize files, create folders, and generate sharing links, ensuring my documents, drafts, screenshots, and PDFs were accessible across all my devices.