Don't use caches when making release builds

.github/workflows/release.yml

@@ -19,12 +19,7 @@ jobs:
       with:
         python-version: 3.x
 
-    - name: Cache python libs
-      uses: actions/cache@v1
-      id: cache-pip # needed in if test
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip
+    # Note: we don't use caches on release builds because we don't want to accidentally not have a virgin build machine
 
     - name: Upgrade python tools
       # We actually want to run this every time
@@ -33,13 +28,6 @@ jobs:
         python -m pip install --upgrade pip
         pip install -U platformio meshtastic adafruit-nrfutil
 
-    - name: Cache platformio
-      uses: actions/cache@v1
-      id: cache-platformio # needed in if test
-      with:
-        path: ~/.platformio
-        key: ${{ runner.os }}-platformio
-
     - name: Upgrade platformio
       run: |
         pio upgrade
@@ -52,19 +40,21 @@ jobs:
     - name: Build everything
       run: bin/build-all.sh
 
-    - name: release
+    - name: Create release
       uses: actions/create-release@v1
       id: create_release
       with:
         draft: true
         prerelease: true
-        release_name: ${{ steps.version.outputs.version }}
-        tag_name: ${{ github.ref }}
-        body: Text to be filled in by human
+        release_name: ${{ steps.version.outputs.version }} alpha
+        tag_name: ${{ steps.version.outputs.version }}
+        # was ${{ github.ref }}
+        body: |
+          Autogenerated by github action, developer should edit as required before publishing...
       env:
         GITHUB_TOKEN: ${{ github.token }}
 
-    - name: upload artifact
+    - name: Add artifact to release
       uses: actions/upload-release-asset@v1
       env:
         GITHUB_TOKEN: ${{ github.token }}