Basic docker commands


# Create a directory structure

mkdir inventory_app

cd inventory_app


# Create app.py, requirements.txt, and Dockerfile

touch app.py requirements.txt Dockerfile


# Build the Docker image using the standard Python 3.11 image

docker build -t inventory-app:full .


# Display Docker images

docker images


# Rewrite the Dockerfile to use the lightweight Python 3.11-slim image

# (Edit Dockerfile content accordingly)


# Build the Docker image using the slim image

docker build -t inventory-app:slim .


# Display Docker images again

docker images


https://www.kdnuggets.com/how-to-create-minimal-docker-images-for-python-applications

Popular posts from this blog

Automatically Fix Song Metadata and Filenames on Linux with Beets

 🎵 Automatically Fix Song Metadata and Filenames on Linux with Beets Tired of sorting through unknown MP3s with cryptic filenames like Track01.mp3? Sick of missing album info, incorrect genres, and zero cover art? Here's a clean way to batch-fix your music collection with open source tools — no manual editing required. ✅ What You’ll Use beets — the core tool that organizes, renames, and tags your music by matching against the MusicBrainz database. libchromaprint-tools — provides fpcalc, which generates audio fingerprints to identify unlabeled tracks. ffmpeg (optional) — used by beets for transcoding or embedded cover art processing. 🔧 Installation sudo apt update sudo apt install beets libchromaprint-tools ffmpeg 🚀 One Command to Organize It All beet import /path/to/your/music/ Beets will: Fingerprint each file Query MusicBrainz for metadata Rename files (e.g., Artist - Title.mp3) Write correct ID3/metadata tag Optionally move files into organized folders 📁 Example Output Your ...
Read more

Enable Anydesk on Linux

 By default, Anydesk doesn't work on Ubuntu as it uses a different display server than what is expected by Anydesk (it expects the traditional X11 rather than Wayland). Dump this into a file, say, "fix_anydesk.sh", and then run it with sudo bash fix_anydesk.sh The script: #!/bin/bash # Check if the user has root privileges if [[ $EUID -ne 0 ]]; then    echo "This script must be run as root"     exit 1 fi # Backup the GDM configuration file GDM_CONFIG="/etc/gdm3/custom.conf" if [[ -f "$GDM_CONFIG" ]]; then     cp "$GDM_CONFIG" "$GDM_CONFIG.bak"     echo "Backup of custom.conf created." else     echo "GDM configuration file not found."     exit 1 fi # Disable Wayland by uncommenting and setting the 'WaylandEnable' option to false sed -i 's/#WaylandEnable=false/WaylandEnable=false/' "$GDM_CONFIG" # Inform the user echo "Wayland has been disabled. The system will use X11 inste...
Read more

Boot MacOS under VirtualBox

  Introduction The following steps are needed to boot Mac OS under VirtualBox. I tested it using Mac OS X 10.13. I can't guarantee this works. You'll need a source/original mac to copy the OS install. Probably Apple won't approve of this because they want you to buy their original hardware, but sometimes you need hosted VMs in the cloud or similar, and they don't really offer that. Steps Commands below are typed in a command line like the Terminal. 1. On a Mac, do this to download an installer disk: softwareupdate --fetch-full-installer --full-installer-version  ... OR download from the app store. If the operating system you want to install is out of date, ie if the Mac tells you the installer is damaged, set your Mac date and time to however many years ago that operating system came out, and turn of automatic date and time in the date and time system preferences. That way the signature of the installer disk / bundle will still be valid (it is invalid if it is older tha...
Read more