Add linux/arm64 support

Dockerfile

@@ -1,7 +1,6 @@
-FROM jrottenberg/ffmpeg:7.1.1-alpine320
+FROM alpine:3.20
 
-# no glibc
-RUN apk add --no-cache su-exec
+RUN apk add --no-cache ffmpeg su-exec
 
 RUN mkdir -p /output
 

compose.yaml

@@ -1,7 +1,7 @@
 services:
-  ffmpeg-archive:
+  stream-archive:
     build: .
-    container_name: ffmpeg-archive
+    container_name: stream-archive
     environment:
       - INPUT=${INPUT:-rtsp://your-stream-url}
       # uses strftime for naming