diff --git a/aliases.sh b/aliases.sh
index 0e02972..5d31fb9 100644
--- a/aliases.sh
+++ b/aliases.sh
@@ -569,7 +569,7 @@ pymp () {
   if [ ! -d "${@:$#}" ] && [ ! -f "${@:$#}" ]; then
     echo-error "último argumento debe ser un fichero existente."
   fi
-  flake8 --extend-exclude .venv,*@neomake* --max-line-length $LENGTH ${@:$#}
+  flake8 --max-line-length $LENGTH ${@:$#}
   vulture --exclude .venv ${@:$#}
 }
 
@@ -599,7 +599,7 @@ c () {
     else
       cat $@ | jq | batcat --file-name $1 --language json
     fi
-  else 
+  else
     if [[ $(distro-name) = "Arch Linux" ]]; then
       bat $@
     else
@@ -630,3 +630,59 @@ compare () {
       echo "false" && false
   fi
 }
+
+# Emula gitlab-runner sobre docker
+# Cfr. https://stackoverflow.com/a/65920577
+runner () {
+  runner=gitlab-runner
+  : '
+  case $1 in
+    -h | --help)
+      runner-help ;;
+    *)
+      sudo docker run --entrypoint bash --rm -w $PWD -v $PWD:$PWD \
+        -v /var/run/docker.sock:/var/run/docker.sock \
+        gitlab/gitlab-runner:latest \
+        -c git config --global --add safe.directory "*" ; gitlab-runner exec docker $1
+      ;;
+  esac
+  '
+  case $1 in
+    -h | --help)
+      runner-help ;;
+    -i | --init)
+      sudo docker run -d --name $runner -w $PWD -v $PWD:$PWD \
+        -v /var/run/docker.sock:/var/run/docker.sock \
+        gitlab/gitlab-runner:latest 1>/dev/null
+      ;;
+    -rm | --remove)
+      sudo docker rm -f $runner
+        ;;
+    *)
+      sudo docker exec -it -e STAGE=$1 -w $PWD $runner \
+        bash -c 'git config --global --add safe.directory "*" ; gitlab-runner exec docker $STAGE'
+      ;;
+  esac
+  unset runner
+}
+
+runner-help () {
+  echo "runner: utilidad para usar gitlab-runner en un contenedor.
+
+Uso:
+  runner [OPT]
+
+Opciones:
+  -h | --help    Despliega esta ayuda.
+  -i | --init    Inicializa contenedor $runner en $PWD
+  -rm | --remove Elimina contenedor $runner
+  *              Stage de $runner a probar
+
+Ejemplos:
+  runner --init
+  runner build
+  runner test
+  runner deploy
+  runner -h
+  runner -rm"
+}