readme: add new features to readme (#102)

INSTALL.md

@@ -17,6 +17,12 @@ scoop install ctlptl
 
 ## Alternative
 
+### Docker
+
+Available on Docker Hub as [`tiltdev/ctlptl`](https://hub.docker.com/r/tiltdev/ctlptl/tags)
+
+Contains the most recent version of `kind` and `ctlptl` for use in CI environments.
+
 ### Point and click
 
 Visit [the releases page](https://github.com/tilt-dev/ctlptl/releases) and
@@ -27,23 +33,23 @@ download the pre-build binaries for your architecture.
 On macOS:
 
 ```bash
-export CTLPTL_VERSION="0.4.2"
+export CTLPTL_VERSION="0.5.0"
 curl -fsSL https://github.com/tilt-dev/ctlptl/releases/download/v$CTLPTL_VERSION/ctlptl.$CTLPTL_VERSION.mac.x86_64.tar.gz | tar -xzv ctlptl && \
   sudo mv ctlptl /usr/local/bin/ctlptl
 ```
 
 On Linux:
 
 ```bash
-export CTLPTL_VERSION="0.4.2"
+export CTLPTL_VERSION="0.5.0"
 curl -fsSL https://github.com/tilt-dev/ctlptl/releases/download/v$CTLPTL_VERSION/ctlptl.$CTLPTL_VERSION.linux.x86_64.tar.gz | tar -xzv ctlptl && \
   sudo mv ctlptl /usr/local/bin/ctlptl
 ```
 
 On Windows:
 
 ```powershell
-$CTLPTL_VERSION = "0.4.2"
+$CTLPTL_VERSION = "0.5.0"
 Invoke-WebRequest "https://github.com/tilt-dev/ctlptl/releases/download/v$CTLPTL_VERSION/ctlptl.$CTLPTL_VERSION.windows.x86_64.zip" -OutFile "ctlptl.zip"
 Expand-Archive "ctlptl.zip" -DestinationPath "ctlptl"
 Move-Item -Force -Path "ctlptl\ctlptl.exe" -Destination "$home\bin\ctlptl.exe"

README.md

@@ -149,6 +149,7 @@ cluster](https://docs.tilt.dev/choosing_clusters.html) and example repos like
 - Docker for Windows
 - [KIND](https://kind.sigs.k8s.io/) and [KIND with a registry](https://kind.sigs.k8s.io/docs/user/local-registry/)
 - [Minikube](https://minikube.sigs.k8s.io/) and Minikube with a registry
+- Creating a cluster on a Remote Docker Host (useful in CI environments like [CircleCI](https://circleci.com/docs/2.0/building-docker-images/))
 - Allocating CPUs
 
 ### Future Work