🦾 arm64 support (#1)

* arm64  v8 image of whisper-ai engine for Apple M's

* Try with new tags input to build action

* Try with buildx

* Fixes pr prefix

* Updates build-arm action to use latest main

---------

Co-authored-by: Harpo Harbert <ryan_harbert@wgbh.org>

.github/workflows/CD.yml

@@ -12,6 +12,19 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
-    name: 🔨 Build and deploy docker image
+  build-main:
+    name: 🔨 Build and deploy default docker image
     uses: WGBH-MLA/.github/.github/workflows/build.yml@main
+
+  build-arm:
+    name: 🦾 Build and deploy arm64v8 docker image
+    uses: WGBH-MLA/.github/.github/workflows/build.yml@main
+    with:
+      file: arm64.dockerfile
+      buildx: true
+      platforms: linux/arm64
+      tags: |
+        type=schedule,prefix=arm64-
+        type=ref,event=branch,prefix=arm64-
+        type=ref,event=tag,prefix=arm64-
+        type=ref,event=pr,prefix=arm64-pr-

arm64.dockerfile

@@ -0,0 +1,4 @@
+FROM arm64v8/debian:stable-slim
+RUN apt update && apt install -y git ffmpeg python3 python3-pip
+RUN pip install -U pip
+RUN pip install git+https://github.com/openai/whisper.git