Initial commit

clear-registry

@@ -0,0 +1,159 @@
+#!/bin/bash
+
+# Function to check and install required utilities
+check_and_install_deps() {
+    local deps=("skopeo" "jq" "grep" "sort" "head")
+    local missing_deps=()
+
+    # Check availability of each utility
+    for dep in "${deps[@]}"; do
+        if ! command -v "$dep" &> /dev/null; then
+            missing_deps+=("$dep")
+        fi
+    done
+
+    # If all utilities are installed, exit
+    if [ ${#missing_deps[@]} -eq 0 ]; then
+        echo "✓ All required utilities are installed."
+        return 0
+    fi
+
+    echo "❌ The following utilities are missing: ${missing_deps[*]}"
+    echo "🔍 Attempting to install..."
+
+    # Determine package manager and install missing utilities
+    if command -v apt &> /dev/null; then
+        # Debian/Ubuntu
+        sudo apt update
+        sudo apt install -y "${missing_deps[@]}"
+    elif command -v apt-get &> /dev/null; then
+        # Debian/Ubuntu (alternative)
+        sudo apt-get update
+        sudo apt-get install -y "${missing_deps[@]}"
+    elif command -v pacman &> /dev/null; then
+        # Arch Linux
+        for dep in "${missing_deps[@]}"; do
+            case $dep in
+                "skopeo")
+                    sudo pacman -S --noconfirm skopeo
+                    ;;
+                "jq")
+                    sudo pacman -S --noconfirm jq
+                    ;;
+                "grep"|"sort"|"head")
+                    # These utilities are usually part of coreutils
+                    sudo pacman -S --noconfirm coreutils
+                    ;;
+            esac
+        done
+    elif command -v apk &> /dev/null; then
+        # Alpine Linux
+        sudo apk add "${missing_deps[@]}"
+    elif command -v yum &> /dev/null; then
+        # RHEL/CentOS 7
+        sudo yum install -y epel-release
+        sudo yum install -y "${missing_deps[@]}"
+    elif command -v dnf &> /dev/null; then
+        # Fedora/RHEL 8+
+        sudo dnf install -y "${missing_deps[@]}"
+    elif command -v zypper &> /dev/null; then
+        # openSUSE
+        sudo zypper install -y "${missing_deps[@]}"
+    else
+        echo "❌ Could not determine package manager. Install utilities manually: ${missing_deps[*]}"
+        exit 1
+    fi
+
+    # Check if utilities were installed successfully
+    local failed_deps=()
+    for dep in "${missing_deps[@]}"; do
+        if ! command -v "$dep" &> /dev/null; then
+            failed_deps+=("$dep")
+        fi
+    done
+
+    if [ ${#failed_deps[@]} -gt 0 ]; then
+        echo "❌ Failed to install: ${failed_deps[*]}"
+        exit 1
+    else
+        echo "✓ All missing utilities were successfully installed."
+    fi
+}
+
+# Function to display help
+show_help() {
+    echo "Usage: $0 <repository> [number_of_tags]"
+    echo ""
+    echo "Arguments:"
+    echo "  <repository>      - Docker repository URL or name (required)"
+    echo "  [number_of_tags]  - number of recent tags to keep (default: 3)"
+    echo ""
+    echo "Examples:"
+    echo "  $0 docker.io/library/alpine"
+    echo "  $0 myregistry.local:5000/myapp 5"
+    echo "  $0 registry.example.com/project/image 10"
+}
+
+# Check for the first argument
+if [ -z "$1" ]; then
+    echo "❌ Error: repository not specified"
+    echo ""
+    show_help
+    exit 1
+fi
+
+# Check and install dependencies
+check_and_install_deps
+
+# Set the number of tags to keep
+KEEP_TAGS=${2:-3}
+
+# Check that the number of tags is a positive number
+if ! [[ "$KEEP_TAGS" =~ ^[0-9]+$ ]] || [ "$KEEP_TAGS" -lt 1 ]; then
+    echo "❌ Error: number of tags must be a positive number"
+    exit 1
+fi
+
+echo "🔍 Fetching list of tags for $1..."
+echo "📦 Will keep $KEEP_TAGS recent tags (excluding latest)"
+
+# Fetch all tags
+allTags=$(skopeo list-tags docker://"$1" 2>/dev/null | jq -r '.Tags[]')
+
+if [ -z "$allTags" ]; then
+    echo "❌ Error: could not fetch tag list or repository is empty"
+    exit 1
+fi
+
+# Count total number of tags
+totalTags=$(echo "$allTags" | wc -l)
+
+# Determine how many tags to delete
+tagsToDelete=$((totalTags - KEEP_TAGS - 1)) # -1 for latest
+
+if [ "$tagsToDelete" -le 0 ]; then
+    echo "✓ Total tags: $totalTags (including latest)"
+    echo "✓ Nothing to delete, keeping all $totalTags tags"
+    exit 0
+fi
+
+# Get tags to delete (exclude latest and keep KEEP_TAGS recent ones)
+oldTags=$(echo "$allTags" | grep -v "latest" | sort | head -n -"$KEEP_TAGS")
+
+echo "📊 Total tags: $totalTags (including latest)"
+echo "🗑️  Will be deleted: $(echo "$oldTags" | wc -l) tags"
+echo ""
+
+# Delete old tags
+for tag in $oldTags; do
+    echo "  ➜ Deleting: $tag"
+    if skopeo delete docker://"$1:$tag" 2>/dev/null; then
+        echo "    ✓ Successfully deleted"
+    else
+        echo "    ❌ Error deleting $tag"
+    fi
+done
+
+echo ""
+echo "✅ Done!"
+echo "📝 Kept: $KEEP_TAGS recent tags and latest"