Enhance local-up script to ensure Loki and nginx log directories exist with appropriate permissions

scripts/local-up.sh

@@ -41,4 +41,38 @@ if [ -f "$ENV_FILE" ]; then
   done < "$ENV_FILE"
 fi
 
+# Ensure runtime directories exist for Loki and nginx logs so compose startup
+# doesn't fail with permission/missing-folder errors. We create the minimal
+# subfolders Loki expects and a host `logs/` for nginx/Promtail.
+echo "Ensuring loki and logs folders exist under $REPO_ROOT/docker and $REPO_ROOT/logs"
+mkdir -p "$REPO_ROOT/docker/loki-data/index" \
+         "$REPO_ROOT/docker/loki-data/cache" \
+         "$REPO_ROOT/docker/loki-data/chunks" \
+         "$REPO_ROOT/docker/loki-data/compactor" \
+         "$REPO_ROOT/docker/loki-wal" \
+         "$REPO_ROOT/logs"
+
+# Set permissive perms for logs so nginx/promtail can use it in development.
+chmod -R 0777 "$REPO_ROOT/logs" || true
+
+# Ensure loki data directories exist and have reasonable perms. The Loki
+# container runs as numeric UID 10001; if possible try to chown the folders to
+# that UID so Loki can write to them. If sudo is available the script will
+# attempt it (you may be prompted). If it fails we'll continue and leave a
+# message for manual intervention.
+chmod -R 0755 "$REPO_ROOT/docker/loki-data" "$REPO_ROOT/docker/loki-wal" || true
+if [ "$(id -u)" -eq 0 ]; then
+  chown -R 10001:10001 "$REPO_ROOT/docker/loki-data" "$REPO_ROOT/docker/loki-wal" || true
+else
+  if command -v sudo >/dev/null 2>&1; then
+    echo "Attempting to chown loki folders to UID 10001 (may prompt for sudo password)"
+    sudo chown -R 10001:10001 "$REPO_ROOT/docker/loki-data" "$REPO_ROOT/docker/loki-wal" || \
+      echo "sudo chown failed or was cancelled; Loki may not start until these folders are owned by UID 10001"
+  else
+    echo "Note: sudo not available. Created loki folders but did not chown them." 
+    echo "If Loki fails with permission errors, run:"
+    echo "  sudo chown -R 10001:10001 $REPO_ROOT/docker/loki-data $REPO_ROOT/docker/loki-wal"
+  fi
+fi
+
 COMPOSE_ENV=$COMPOSE_ENV docker compose -f docker/docker-compose.prod.yml -f docker/docker-compose.dev.yml up --build

templates/exam_list.html

@@ -114,6 +114,7 @@
 
     {% if collection %}
         <h2>Collection: {{collection.name}}</h2>
+        <p class="muted"><a href="{% url 'generic:examcollection_detail' collection.pk %}">← Back to collection</a></p>
     {% endif %}
 
     <details class="help-text">