Remove git clone from container. Run custom build script

alpine-build.dockerfile

@@ -3,14 +3,11 @@
 FROM alpine:3.16.2
 
 # Install necessary packages
-RUN apk add git \ # download
-    dotnet6-sdk npm # build
+RUN apk add git \
+    dotnet6-sdk npm
 
-# Clone repo
-#RUN git clone https://github.com/Kareadita/Kavita.git
-RUN git clone https://github.com/RealStickman/Kavita.git && \
-    cd Kavita && \
-    git checkout rs_alpine
+# copy download & build script
+COPY ["alpine_build.sh","/"]
 
 ENTRYPOINT [ "/bin/ash" ]
-CMD [ "build.sh linux-musl-x64" ] # call build script here
+CMD [ "alpine_build.sh" ] # call build script here