lidarr-flac2mp3 update/add workflows

Dockerfile

@@ -1,7 +1,21 @@
+# syntax=docker/dockerfile:1
+
+FROM ghcr.io/linuxserver/baseimage-alpine:3.17 as buildstage
+
+ARG MOD_VERSION
+
+COPY root/ /root-layer/
+
+RUN \
+  MOD_VERSION="${MOD_VERSION:-unknown}" && \
+  sed -i -e "s/{{VERSION}}/$MOD_VERSION/" \
+    /root-layer/usr/local/bin/flac2mp3.sh \
+    /root-layer/etc/s6-overlay/s6-rc.d/init-mod-lidarr-flac2mp3-add-package/run
+
 ## Single layer deployed image ##
 FROM scratch
 
 LABEL maintainer="TheCaptain989"
 
 # Copy local files
-COPY root/ /
+COPY --from=buildstage /root-layer/ /