Add note about git-lfs

docs/executors/shell.md

@@ -5,6 +5,10 @@ locally to the machine that the Runner is installed. It supports all systems on
 which the Runner can be installed. That means that it's possible to use scripts
 generated for Bash, Windows PowerShell and Windows Batch.
 
+NOTE: **Note:**
+GitLab Runner will use the `git lfs` command if [Git LFS](https://git-lfs.github.com) is installed on the machine.
+Ensure Git LFS is up-to-date on any systems where GitLab Runner will run using shell executor.
+
 ## Overview
 
 The scripts can be run as unprivileged user if the `--user` is added to the

docs/executors/ssh.md

@@ -7,6 +7,10 @@ is currently not supported.
 This is a simple executor that allows you to execute builds on a remote machine
 by executing commands over SSH.
 
+NOTE: **Note:**
+GitLab Runner will use the `git lfs` command if [Git LFS](https://git-lfs.github.com) is installed on the remote machine.
+Ensure Git LFS is up-to-date on any remote systems where GitLab Runner will run using SSH executor.
+
 ## Overview
 
 To use the SSH executor you need to specify `executor = "ssh"` under the

docs/executors/virtualbox.md

@@ -9,6 +9,10 @@ build environment for every build. This executor supports all systems that can
 be run on VirtualBox. The only requirement is that the virtual machine exposes
 its SSH server and provide a bash-compatible shell.
 
+NOTE: **Note:**
+GitLab Runner will use the `git lfs` command if [Git LFS](https://git-lfs.github.com) is installed on the virtual machine.
+Ensure Git LFS is up-to-date on any virtual machine where GitLab Runner will run using VirtualBox executor.
+
 ## Overview
 
 The project's source code is checked out to: `~/builds/<namespace>/<project-name>`.