Fix a little typo in README.md
diff --git a/README.md b/README.md
index 62a239f..8110c10 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@
# Installing more tools
-You can run your container as root - and unstall via apt-get, install as part of build steps via jenkins tool installers, or you can create your own Dockerfile to customise, for example:
+You can run your container as root - and install via apt-get, install as part of build steps via jenkins tool installers, or you can create your own Dockerfile to customise, for example:
```
FROM jenkins