Fix home dir issue

Author: ddeboer

README.md

@@ -8,20 +8,20 @@ to Hex.pm automatically. This is most useful when you tag your repository.
 1. First, create a key on your [Hex.pm dashboard](https://hex.pm/dashboard/keys). Make sure to give it write
    permissions.
 
-2. Next, use this GitHub Action in your workflow:    
+2. Next, add the key from step 1 to your GitHub repository’s secrets. Call it `HEX_API_KEY`.
+   
+3. Finally, use this GitHub Action in your workflow:
 
     ```yaml
     on:
       push:
         tags:
         - '*'
-    uses: erlangpack/github-action@v1
-    with:
-      hex-api-key: ${{ secrets.HEX_API_KEY }}    
+    jobs:
+      publish:
+        runs-on: ubuntu-latest
+        steps:
+        - uses: erlangpack/github-action@v1
+          env:
+            HEX_API_KEY: ${{ secrets.HEX_API_KEY }}
     ```
-
-## Inputs
-
-### `hex-api-key`
-
-**Required** Your Hex API with write permissions. Make sure never to expose this key, so add it as a secret. 

action.yml

@@ -1,9 +1,5 @@
 name: 'Publish to Hex'
-description: 'Publish your repository’s Git tags as releases on Hex.pm'
-inputs:
-  hex-api-key:
-    description: 'Your Hex API key that has write permissions to your package'
-    required: true
+description: 'Automate publishing packages on Hex.pm'
 runs:
   using: 'docker'
   image: 'Dockerfile'

entrypoint.sh

@@ -1,3 +1,7 @@
 #!/bin/sh -l
 
-env HEX_API_KEY=$INPUT_HEX_API_KEY rebar3 hex publish -r hexpm --yes
+# This is necessary because GitHub changes the home dir to /github/home when the action is started; Rebar doesn't seem
+# to respect the REBAR_GLOBAL_CONFIG_DIR env var.
+ln -s /rebar3/.config ~/.config
+
+rebar3 hex publish -r hexpm --yes