Gmer4Lfe
d2eb060fe5
Default still removes only dangling (untagged) images. --all removes stopped containers first, then all images not used by any running container — clears tagged orphan images left behind by removed or stopped apps.
164 lines
6.9 KiB
Bash
Executable File
164 lines
6.9 KiB
Bash
Executable File
#!/bin/bash
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# ==============================================================================================
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# ============================= Docker Prune Images ============================================
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# ==============================================================================================
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#
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# PURPOSE
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# ─────────────────────────────────────────────────────────────────────────────
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# Removes orphaned Docker images. Two modes:
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#
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# Default — dangling only (safe, fast):
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# Removes untagged images (no name, no container reference). These accumulate
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# after container updates pull a new image, leaving the old one untagged.
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# Running containers are never affected.
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#
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# --all — full orphan cleanup:
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# Step 1: removes stopped containers (exited/created state).
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# Step 2: removes all images not used by any running container.
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# Use this to clear tagged images left behind by removed or stopped apps.
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# CAUTION: also removes intentionally stopped containers — only run when you
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# know all stopped containers are safe to delete.
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#
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# ==============================================================================================
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# RUNTIME MODES
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# ==============================================================================================
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#
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# docker_prune_images.sh
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# Remove dangling (untagged) images only.
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#
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# docker_prune_images.sh --all
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# Remove stopped containers, then remove all unused images.
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#
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# docker_prune_images.sh --dry-run
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# Show what would be removed without making changes.
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#
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# docker_prune_images.sh --status
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# Show dangling images and stopped containers. No changes.
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#
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# ==============================================================================================
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/../load_config.sh"
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# ── Handle --all before parse_args ────────────────────────────────────────────
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ALL_MODE=false
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FILTERED_ARGS=()
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for _arg in "$@"; do
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[[ "$_arg" == "--all" ]] && ALL_MODE=true || FILTERED_ARGS+=("$_arg")
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done
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parse_args "${FILTERED_ARGS[@]}"
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# ==============================================================================================
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# ━━━ Setup ━━━
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# ==============================================================================================
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if [[ "$EUID" -ne 0 ]]; then
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error "Must be run as root"
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exit 1
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fi
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acquire_lock
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# ==============================================================================================
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# ━━━ Status ━━━
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# ==============================================================================================
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if [[ "$SHOW_STATUS" == true ]]; then
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echo ""
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echo "━━━━━ $ICON_SUMMARY DOCKER PRUNE IMAGES STATUS ━━━━━"
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DANGLING=$(docker images -f "dangling=true" --format "{{.ID}}\t{{.Repository}}:{{.Tag}}\t{{.Size}}\t{{.CreatedSince}}" 2>/dev/null)
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STOPPED=$(docker ps -a --filter "status=exited" --filter "status=created" \
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--format "{{.ID}}\t{{.Names}}\t{{.Image}}\t{{.Status}}" 2>/dev/null)
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echo ""
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echo "$ICON_CONTAINERS Dangling images (no tag, no container):"
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if [[ -z "$DANGLING" ]]; then
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echo " none"
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else
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echo "$DANGLING" | while IFS=$'\t' read -r id repo size age; do
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echo " $id $repo $size $age"
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done
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fi
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echo ""
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echo "$ICON_CONTAINERS Stopped containers (--all would remove these first):"
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if [[ -z "$STOPPED" ]]; then
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echo " none"
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else
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echo "$STOPPED" | while IFS=$'\t' read -r id name image status; do
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echo " $name ($image) $status"
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done
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fi
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echo ""
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echo "━━━━━━━━━━━━━━━━━━━━━━━"
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exit 0
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fi
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# ==============================================================================================
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# ━━━ Run ━━━
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# ==============================================================================================
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MODE_LABEL=$([[ "$ALL_MODE" == true ]] && echo "full orphan cleanup" || echo "dangling only")
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echo "━━━ $ICON_CONTAINERS Docker Prune Images ($MODE_LABEL) — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
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TOTAL_RECLAIMED=0
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# ── Step 1 (--all only): remove stopped containers ────────────────────────────
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if [[ "$ALL_MODE" == true ]]; then
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STOPPED_IDS=$(docker ps -a --filter "status=exited" --filter "status=created" -q 2>/dev/null)
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STOPPED_COUNT=$(echo "$STOPPED_IDS" | grep -c . || echo 0)
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if [[ "$STOPPED_COUNT" -eq 0 ]]; then
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log "No stopped containers"
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elif [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would remove $STOPPED_COUNT stopped container(s):"
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docker ps -a --filter "status=exited" --filter "status=created" \
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--format " {{.Names}} {{.Image}} {{.Status}}" 2>/dev/null
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else
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log "Removing $STOPPED_COUNT stopped container(s)..."
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docker container prune -f 2>&1 | grep -v "^Total\|^$" || true
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success "Removed $STOPPED_COUNT stopped container(s)"
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fi
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echo ""
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fi
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# ── Step 2: prune images ───────────────────────────────────────────────────────
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PRUNE_FLAGS=$([[ "$ALL_MODE" == true ]] && echo "-a" || echo "")
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PRUNE_FILTER=$([[ "$ALL_MODE" == true ]] && echo "" || echo '-f "dangling=true"')
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# Preview count
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if [[ "$ALL_MODE" == true ]]; then
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# Images not used by any running container
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RUNNING_IMAGES=$(docker ps --format "{{.Image}}" 2>/dev/null)
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UNUSED_COUNT=$(docker images --format "{{.Repository}}:{{.Tag}}" 2>/dev/null \
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| grep -vxF "$RUNNING_IMAGES" | grep -c . || echo 0)
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TARGET_LABEL="$UNUSED_COUNT unused image(s)"
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else
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DANGLING_IDS=$(docker images -f "dangling=true" -q 2>/dev/null)
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UNUSED_COUNT=$(echo "$DANGLING_IDS" | grep -c . || echo 0)
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TARGET_LABEL="$UNUSED_COUNT dangling image(s)"
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fi
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if [[ "$UNUSED_COUNT" -eq 0 ]]; then
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success "No images to remove"
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exit 0
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fi
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would remove $TARGET_LABEL:"
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if [[ "$ALL_MODE" == true ]]; then
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docker images --format " {{.Repository}}:{{.Tag}} {{.Size}} {{.CreatedSince}}" 2>/dev/null \
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| grep -vF "$(docker ps --format '{{.Image}}' 2>/dev/null)" || true
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else
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docker images -f "dangling=true" \
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--format " {{.ID}} {{.Size}} created {{.CreatedSince}}" 2>/dev/null
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fi
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exit 0
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fi
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log "Pruning $TARGET_LABEL..."
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OUTPUT=$(docker image prune $PRUNE_FLAGS -f 2>&1)
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[[ "$ENABLE_LOGGING" == "true" ]] && echo "$OUTPUT" | sed 's/^/ /'
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RECLAIMED=$(echo "$OUTPUT" | grep -E "^Total reclaimed" || echo "Total reclaimed space: unknown")
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success "Done — $RECLAIMED"
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