dannberg

---
created: <% tp.file.creation_date() %>
---
tags:: [[+Daily Notes]]

# <% moment(tp.file.title,'YYYY-MM-DD').format("dddd, MMMM DD, YYYY") %>

<< [[Timestamps/<% tp.date.now("YYYY", -1) %>/<% tp.date.now("MM-MMMM", -1) %>/<% tp.date.now("YYYY-MM-DD-dddd", -1) %>|Yesterday]] | [[Timestamps/<% tp.date.now("YYYY", 1) %>/<% tp.date.now("MM-MMMM", 1) %>/<% tp.date.now("YYYY-MM-DD-dddd", 1) %>|Tomorrow]] >>

---

ciaranmcnulty

Docker for Mac

On M1 machines, Docker for Mac is running a lightweight linux ARM VM, then running containers within that, so containers are essentially running natively. Don't be fooled by the fact the UI or binary CLI tools (e.g. docker) might require Rosetta.

Within that VM is an emulation layer called QEmu. This can be used by docker to run Intel containers. This does not use Rosetta at all, and has a roughly 5-6X performance penalty. (If you just upgraded your CPU this may result in a similar performance to your old machine!)

Pulling and running with Docker

Many images in public registries are multi-architecture. For instance at the time of writing on Docker Hub the php:8.0-cli image has the following digests:

JustinGrote

#Typical values: lts, preview, 7.1.3, 7.2.0-preview.5
#See: https://hub.docker.com/_/microsoft-powershell
ARG PWSHVERSION=lts
FROM mcr.microsoft.com/powershell:${PWSHVERSION}-ubuntu-18.04

LABEL description="Powershell Universal"
SHELL ["pwsh", "-noninteractive", "-command"]

#Path to Powershell Universal
ARG PSUPATH=/home/Universal