Fix misused environment variable name

Action was attempting to find the GitHub home directory using the `GITHUB_HOME` environment variable, but the correct one is simple `HOME`. A simple change was made to the Test Run workflow in which the image is pushed on behalf of matootie, instead of a value specified in a secret.

.github/workflows/test.yml | 2 +-
dist/index.js              | 2 +-
index.js                   | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

Author: matootie

.github/workflows/test.yml

@@ -14,5 +14,5 @@ jobs:
     - name: Run the Action
       uses: ./
       with:
-        username: ${{ secrets.USERNAME }}
+        username: matootie
         personalAccessToken: ${{ secrets.PERSONAL_ACCESS_TOKEN }}

dist/index.js

@@ -977,7 +977,7 @@ async function run() {
 
     // Set the workspace directory.
     const workspace = process.env['GITHUB_WORKSPACE'];
-    const home = process.env['GITHUB_HOME'];
+    const home = process.env['HOME'];
 
     // Download and extract the desired Docker archive.
     const dockerVersion = core.getInput('dockerVersion', { required: true });

index.js

@@ -37,7 +37,7 @@ async function run() {
 
     // Set the workspace directory.
     const workspace = process.env['GITHUB_WORKSPACE'];
-    const home = process.env['GITHUB_HOME'];
+    const home = process.env['HOME'];
 
     // Download and extract the desired Docker archive.
     const dockerVersion = core.getInput('dockerVersion', { required: true });