Add the endpoint that can be used to change baseUrl

Signed-off-by: Joao Pereira <joaopapereira@gmail.com>

Author: joaopapereira

README.md

@@ -13,7 +13,7 @@ By default, installs latest versions of `ytt`, `kbld`, `kapp`, `kwt`, `imgpkg`,
 
 ```yaml
 steps:
-- uses: carvel-dev/setup-action@v2
+- uses: carvel-dev/setup-action@v3
 - run: |
     ytt version
     kbld version
@@ -23,7 +23,7 @@ steps:
 
 ```yaml
 steps:
-- uses: carvel-dev/setup-action@v2
+- uses: carvel-dev/setup-action@v3
   with:
     token: ${{ secrets.GITHUB_TOKEN }}
 - run: |
@@ -35,7 +35,7 @@ To install only specific apps:
 
 ```yaml
 steps:
-- uses: carvel-dev/setup-action@v2
+- uses: carvel-dev/setup-action@v3
   with:
     only: ytt, kbld
 - run: |
@@ -47,7 +47,7 @@ To exclude specific apps:
 
 ```yaml
 steps:
-- uses: carvel-dev/setup-action@v2
+- uses: carvel-dev/setup-action@v3
   with:
     exclude: kwt, vendir
 - run: |
@@ -59,7 +59,7 @@ To use a specific version of an app:
 
 ```yaml
 steps:
-- uses: carvel-dev/setup-action@v2
+- uses: carvel-dev/setup-action@v3
   with:
     only: ytt, kbld
     kbld: v0.28.0
@@ -68,6 +68,33 @@ steps:
     kbld version
 ```
 
+When you host the carvel repositories in your own github instance:
+
+```yaml
+steps:
+- uses: carvel-dev/setup-action@v3
+  with:
+    instance: https://acme.github.com/api/v3
+    token: token-for-your-instance
+- run: |
+    ytt version
+    kbld version
+```
+
+When you are running the action in your own github instance and want to retrieve carvel from the github.com:
+
+```yaml
+steps:
+- uses: carvel-dev/setup-action@v3
+  with:
+    token: TOKEN-FROM-GITHUB.COM
+- run: |
+    ytt version
+    kbld version
+```
+
+
+
 ## Node version support
 
 Version `v3` requires a Node 24 runner. If you're using older self-hosted runners, you can still use `v2` for Node 20 support or `v1` for Node 16 support.

action.yml

@@ -9,6 +9,10 @@ inputs:
     description: Github token to use to avoid rate limits
     required: false
     default: ""
+  endpoint:
+    description: Defines the API endpoint to use instead of the default GitHub API. Useful for GitHub Enterprise users if they have the carvel tools in their GitHub instance.
+    required: false
+    default: "https://api.github.com"
   only:
     description: List apps to download if you don't need all
     required: false