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Goal When building a Docker image, we often install various C++ libraries. However, when working inside the container as a non-root user, header files may not be automatically included in the default search paths, which can be inconvenient. We want to configure this neatly during the image build (inside the Dockerfile). However, the ENV directive only sets environment variables directly or for the root context, and might not always propagate properly to custom non-root users added later in certain shell sessions. ...

This article is for Day 6 of the “Wall Advent Calendar 2021”. Why Build a Home Theater? Humans are creatures driven to install things on walls, and the undisputed king of wall-mounted aspirations for everyone is the “home theater.” Popular Wall Installations by Gender Ranking 2021 Men Women 1. Home Theater 1. Home Theater 2. Climbing Wall 2. Abstract painting by a college friend 3. Andy Warhol poster 3. Black-and-white Mads Mikkelsen poster One major hurdle to building a home theater in Japan is that roughly 40% of housing consists of rental apartments. Unlike homeowners, tenants face strict constraints: ...

Wall Advent Calendar 2023 Day 21 Whether preparing for a wedding, shaking off holiday pounds, or getting ready for summer, we often find ourselves wanting to lose around 3 kg (6-7 lbs) in a month. However, because human discipline is inherently fragile, many people hit a stubborn “wall” when dieting. Problem Statement: Lose 3–5 kg in 1 month Challenge: Dieting is painful. Proposed Method Since restrictive diets are agonizing, let us consider a “Diet where you MUST eat”. The concept is simple: your only constraint for the day is that you must finish a specific massive dish. Beyond that, you are free to eat whatever you want. ...