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| 1 | +#!/bin/bash |
| 2 | +# Refreshes image digests in docker-compose.yml and regenerates IMAGE_LOCK.md. |
| 3 | +# Uses :latest for each configured image repository, then pins by digest. |
| 4 | + |
| 5 | +set -euo pipefail |
| 6 | + |
| 7 | +SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)" |
| 8 | +COMPOSE_FILE="$SCRIPT_DIR/docker-compose.yml" |
| 9 | +LOCK_FILE="$SCRIPT_DIR/IMAGE_LOCK.md" |
| 10 | +ENV_FILE="$SCRIPT_DIR/.env" |
| 11 | + |
| 12 | +PROFILES=(autoupdate) |
| 13 | +OPTIONAL_SERVICES=(watchtower) |
| 14 | + |
| 15 | +for cmd in docker awk sed mktemp; do |
| 16 | + if ! command -v "$cmd" >/dev/null 2>&1; then |
| 17 | + echo "Missing required command: $cmd" |
| 18 | + exit 1 |
| 19 | + fi |
| 20 | +done |
| 21 | + |
| 22 | +if [[ ! -f "$COMPOSE_FILE" ]]; then |
| 23 | + echo "Could not find $COMPOSE_FILE" |
| 24 | + exit 1 |
| 25 | +fi |
| 26 | + |
| 27 | +compose() { |
| 28 | + docker compose "${PROFILE_ARGS[@]}" "$@" |
| 29 | +} |
| 30 | + |
| 31 | +PROFILE_ARGS=() |
| 32 | +for profile in "${PROFILES[@]}"; do |
| 33 | + PROFILE_ARGS+=(--profile "$profile") |
| 34 | +done |
| 35 | + |
| 36 | +tmp_map="$(mktemp)" |
| 37 | +tmp_compose="$(mktemp)" |
| 38 | +tmp_rendered="$(mktemp)" |
| 39 | + |
| 40 | +cleanup() { |
| 41 | + if [[ "${CREATED_ENV:-0}" == "1" ]]; then |
| 42 | + rm -f "$ENV_FILE" |
| 43 | + fi |
| 44 | + rm -f "$tmp_map" "$tmp_compose" "$tmp_rendered" |
| 45 | +} |
| 46 | +trap cleanup EXIT |
| 47 | + |
| 48 | +CREATED_ENV=0 |
| 49 | +if [[ ! -f "$ENV_FILE" ]]; then |
| 50 | + cp "$SCRIPT_DIR/.env.example" "$ENV_FILE" |
| 51 | + CREATED_ENV=1 |
| 52 | +fi |
| 53 | + |
| 54 | +compose config > "$tmp_rendered" |
| 55 | +while IFS= read -r service; do |
| 56 | + image_ref="$(awk -v svc="$service" ' |
| 57 | + $0 ~ ("^ " svc ":$") { in_service=1; next } |
| 58 | + in_service && $0 ~ /^ image:[[:space:]]+/ { |
| 59 | + line=$0 |
| 60 | + sub(/^ image:[[:space:]]+/, "", line) |
| 61 | + print line |
| 62 | + exit |
| 63 | + } |
| 64 | + in_service && $0 ~ /^ [A-Za-z0-9_-]+:$/ { in_service=0 } |
| 65 | + ' "$tmp_rendered")" |
| 66 | + |
| 67 | + if [[ -z "$image_ref" ]]; then |
| 68 | + echo "Could not resolve image for service: $service" |
| 69 | + exit 1 |
| 70 | + fi |
| 71 | + echo "$service|$image_ref" >> "$tmp_map" |
| 72 | +done < <(compose config --services) |
| 73 | + |
| 74 | +if [[ ! -s "$tmp_map" ]]; then |
| 75 | + echo "Failed to parse service images from compose config." |
| 76 | + exit 1 |
| 77 | +fi |
| 78 | + |
| 79 | +while IFS='|' read -r service image_ref; do |
| 80 | + repo="${image_ref%@*}" |
| 81 | + candidate="${repo}:latest" |
| 82 | + echo "Refreshing $service ($candidate)" |
| 83 | + docker pull "$candidate" >/dev/null |
| 84 | + digest="$(docker image inspect --format '{{index .RepoDigests 0}}' "$candidate")" |
| 85 | + if [[ -z "$digest" ]]; then |
| 86 | + echo "Failed to resolve digest for $candidate" |
| 87 | + exit 1 |
| 88 | + fi |
| 89 | + sed -i '' -E "s#^${service}\\|.*#${service}|${digest}#" "$tmp_map" |
| 90 | +done < "$tmp_map" |
| 91 | + |
| 92 | +awk -F'|' ' |
| 93 | + NR==FNR { lock[$1]=$2; next } |
| 94 | + /^[ ]{2}[a-zA-Z0-9_-]+:$/ { |
| 95 | + svc=$0 |
| 96 | + sub(/^[ ]{2}/, "", svc) |
| 97 | + sub(/:$/, "", svc) |
| 98 | + current=svc |
| 99 | + print |
| 100 | + next |
| 101 | + } |
| 102 | + /^[ ]{4}image:/ && (current in lock) { |
| 103 | + print " image: " lock[current] |
| 104 | + next |
| 105 | + } |
| 106 | + { print } |
| 107 | +' "$tmp_map" "$COMPOSE_FILE" > "$tmp_compose" |
| 108 | + |
| 109 | +mv "$tmp_compose" "$COMPOSE_FILE" |
| 110 | + |
| 111 | +docker_engine="$(docker version --format '{{.Server.Version}}')" |
| 112 | +platform="$(docker info --format '{{.Architecture}} ({{.OperatingSystem}})')" |
| 113 | +date_utc="$(date -u +%F)" |
| 114 | + |
| 115 | +{ |
| 116 | + echo "# Image Lock Matrix" |
| 117 | + echo |
| 118 | + echo "This stack is pinned to exact image digests in \`docker-compose.yml\` for reproducible installs." |
| 119 | + echo |
| 120 | + echo "Tested lock snapshot:" |
| 121 | + echo "- Date: \`$date_utc\`" |
| 122 | + echo "- Docker Engine: \`$docker_engine\`" |
| 123 | + echo "- Platform: \`$platform\`" |
| 124 | + echo |
| 125 | + echo "| Service | Locked Image |" |
| 126 | + echo "|---|---|" |
| 127 | + while IFS='|' read -r service digest; do |
| 128 | + label="$service" |
| 129 | + for optional in "${OPTIONAL_SERVICES[@]}"; do |
| 130 | + if [[ "$service" == "$optional" ]]; then |
| 131 | + label="$service (optional)" |
| 132 | + fi |
| 133 | + done |
| 134 | + echo "| $label | \`$digest\` |" |
| 135 | + done < "$tmp_map" |
| 136 | + echo |
| 137 | + echo "## Updating The Lock" |
| 138 | + echo |
| 139 | + echo "Run:" |
| 140 | + echo "\`\`\`bash" |
| 141 | + echo "bash scripts/refresh-image-lock.sh" |
| 142 | + echo "\`\`\`" |
| 143 | + echo |
| 144 | + echo "Then smoke test the stack and commit the updated lock files." |
| 145 | +} > "$LOCK_FILE" |
| 146 | + |
| 147 | +echo "Updated:" |
| 148 | +echo " - $COMPOSE_FILE" |
| 149 | +echo " - $LOCK_FILE" |
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