GuiPoM
92 lines
3.2 KiB
Bash
92 lines
3.2 KiB
Bash
#!/bin/bash
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# nas-docker-pull — Pull Docker images and detect available updates
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# Usage: nas-docker-pull
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# Output: JSON (non-interactive mode) or colored text (terminal mode)
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# Idempotent: as long as nas-docker-up has not recreated the containers,
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# the container runs on the old image ID — the gap is always detected
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# Also writes JSON to /tmp/nas-docker-pull.json for use by nas-update
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set -euo pipefail
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if [ -t 1 ]; then INTERACTIVE=true; else INTERACTIVE=false; fi
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# Colors (terminal mode only)
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if $INTERACTIVE; then
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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CYAN='\033[0;36m'
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BOLD='\033[1m'
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RESET='\033[0m'
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else
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RED='' GREEN='' YELLOW='' CYAN='' BOLD='' RESET=''
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fi
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containers_json=""
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count=0
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if $INTERACTIVE; then
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echo -e "${BOLD}--- Checking Docker images ---${RESET}"
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fi
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while IFS=: read -r container_id container_name; do
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# Get compose_dir from container label
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compose_dir=$(docker inspect --format='{{index .Config.Labels "com.docker.compose.project.working_dir"}}' "$container_id" 2>/dev/null | xargs)
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# Skip containers not managed by compose
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if [ -z "$compose_dir" ] || [ ! -d "$compose_dir" ]; then
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continue
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fi
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image_name=$(docker inspect --format='{{.Config.Image}}' "$container_id")
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old_image_id=$(docker inspect --format='{{.Image}}' "$container_id")
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old_ver=$(docker inspect --format='{{index .Config.Labels "org.opencontainers.image.version"}}' "$container_id" 2>/dev/null || echo "")
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[ -z "$old_ver" ] && old_ver="unknown"
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if $INTERACTIVE; then
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echo -ne " Checking ${CYAN}${container_name}${RESET}... "
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fi
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if ! docker pull "$image_name" > /dev/null 2>&1; then
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if $INTERACTIVE; then echo -e "${YELLOW}⚠ Pull error (skipped)${RESET}"; fi
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continue
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fi
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new_image_id=$(docker inspect --format='{{.Id}}' "$image_name" 2>/dev/null)
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if [ "$old_image_id" != "$new_image_id" ]; then
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new_ver=$(docker inspect --format='{{index .Config.Labels "org.opencontainers.image.version"}}' "$image_name" 2>/dev/null || echo "")
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[ -z "$new_ver" ] && new_ver="available"
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if $INTERACTIVE; then
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echo -e "${YELLOW}UPDATE AVAILABLE${RESET}: ${YELLOW}${old_ver}${RESET} → ${GREEN}${new_ver}${RESET}"
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fi
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entry="{\"name\":\"${container_name}\",\"image\":\"${image_name}\",\"compose_dir\":\"${compose_dir}\",\"current\":\"${old_ver}\",\"available\":\"${new_ver}\"}"
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if [ $count -eq 0 ]; then
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containers_json="${entry}"
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else
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containers_json="${containers_json},${entry}"
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fi
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count=$((count + 1))
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else
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if $INTERACTIVE; then echo -e "${GREEN}✅ Up to date${RESET}"; fi
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fi
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done < <(docker ps --format "{{.ID}}:{{.Names}}")
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# Always write JSON to /tmp for use by nas-update
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printf '{"count":%d,"containers":[%s]}\n' "$count" "$containers_json" > /tmp/nas-docker-pull.json
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if $INTERACTIVE; then
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echo ""
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echo -e "${BOLD}--- Summary ---${RESET}"
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if [ $count -eq 0 ]; then
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echo -e "${GREEN}✅ All containers are up to date.${RESET}"
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else
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echo -e "${YELLOW}🐳 ${count} container(s) available for update.${RESET}"
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fi
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else
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cat /tmp/nas-docker-pull.json
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fi
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