Created
April 29, 2026 14:55
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Auto-update Docker Desktop on Debian/Ubuntu: polls appcast.xml, downloads .deb, installs via apt
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| #!/usr/bin/env bash | |
| set -euo pipefail | |
| APPCAST_URL="https://desktop.docker.com/linux/main/amd64/appcast.xml" | |
| DEB_TMP="/tmp/docker-desktop-amd64.deb" | |
| installed=$(dpkg-query -W -f='${Version}' docker-desktop 2>/dev/null | grep -oP '^\d+\.\d+\.\d+' || true) | |
| if [[ -z "$installed" ]]; then | |
| echo "Docker Desktop not installed (dpkg-query found nothing)." | |
| exit 1 | |
| fi | |
| appcast=$(curl -fsSL "$APPCAST_URL") | |
| latest=$(echo "$appcast" | grep -oP 'sparkle:shortVersionString="\K[^"]+') | |
| build=$(echo "$appcast" | grep -oP 'sparkle:version="\K[^"]+') | |
| deb_url=$(echo "$appcast" | grep -oP 'enclosure url="\K[^"]+') | |
| echo "Installed : $installed" | |
| echo "Latest : $latest (build $build)" | |
| if [[ "$installed" == "$latest" ]]; then | |
| echo "Up to date." | |
| exit 0 | |
| fi | |
| echo "Update available: $installed → $latest" | |
| echo "Downloading..." | |
| curl -L --progress-bar -o "$DEB_TMP" "$deb_url" | |
| echo "Installing..." | |
| sudo apt install -y "$DEB_TMP" | |
| echo "Cleaning up..." | |
| rm -f "$DEB_TMP" | |
| echo "Done. Docker Desktop $latest installed." |
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