fix: retain exact observability image evidence

scripts/observability-run.sh

@@ -74,6 +74,12 @@ runtime_dir="$ROOT/tmp/observability/$LOAD_PROJECT"
 output_dir="$ROOT/output/observability/$LABEL"
 prometheus_runtime="$runtime_dir/prometheus"
 grafana_runtime="$runtime_dir/grafana"
+
+if [[ -e "$output_dir" ]]; then
+  echo "Output already exists: $output_dir" >&2
+  exit 1
+fi
+
 mkdir -p "$prometheus_runtime" "$grafana_runtime" "$output_dir"
 chmod 700 "$ROOT/tmp" "$ROOT/tmp/observability" "$runtime_dir" \
   "$ROOT/output" "$ROOT/output/observability" "$output_dir"
@@ -611,7 +617,18 @@ if ! diff -u "$output_dir/database-before.txt" "$output_dir/database-after.txt"
 fi
 
 "${compose[@]}" ps -a >"$output_dir/compose-after.txt"
-"${compose[@]}" images --format json >"$output_dir/images.json"
+mapfile -t compose_container_ids < <("${compose[@]}" ps --all --quiet)
+docker inspect "${compose_container_ids[@]}" |
+  jq '[
+    .[] |
+    {
+      container: (.Name | ltrimstr("/")),
+      configured_image: .Config.Image,
+      image_id: .Image,
+      service: .Config.Labels["com.docker.compose.service"],
+      state: .State.Status
+    }
+  ]' >"$output_dir/images.json"
 
 jq -n \
   --arg run_id "$LABEL" \