diff --git a/povray_wasm/Dockerfile b/povray_wasm/Dockerfile
index 017dba0..d179c46 100644
--- a/povray_wasm/Dockerfile
+++ b/povray_wasm/Dockerfile
@@ -18,12 +18,17 @@ RUN apk add --update \
 	automake \ 
 	make
 
-RUN git clone https://github.com/emscripten-core/emsdk.git
-
 RUN pwd
 
-RUN cd /emsdk && ./emsdk install latest
+WORKDIR /usr/src/
 
-RUN cd /emsdk && ./emsdk activate latest
+RUN cd /usr/src/ && git clone https://github.com/emscripten-core/emsdk.git emsdk
 
-RUN cd /emsdk && source ./emsdk_env.sh
\ No newline at end of file
+ENV POVRAY_VERSION=3.7-stable
+RUN cd /usr/src/ && git clone --depth 1 --branch $POVRAY_VERSION https://github.com/POV-Ray/povray povray
+
+RUN cd /usr/src/emsdk && ./emsdk install latest
+
+RUN cd /usr/src/emsdk && ./emsdk activate latest
+
+RUN cd /usr/src/emsdk && source ./emsdk_env.sh
\ No newline at end of file
diff --git a/povray_wasm/build_docker.sh b/povray_wasm/build_docker.sh
new file mode 100644
index 0000000..d34470a
--- /dev/null
+++ b/povray_wasm/build_docker.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+sudo docker build . -t povray_wasm
\ No newline at end of file
diff --git a/povray_wasm/compile_alpine.sh b/povray_wasm/compile_alpine.sh
index 44caa9f..ac2bd01 100644
--- a/povray_wasm/compile_alpine.sh
+++ b/povray_wasm/compile_alpine.sh
@@ -1,20 +1,11 @@
 #!/bin/bash
 
-#latest-stable#v3.7.0.0
-POVRAY_VERSION=3.7-stable
-
-if [ ! -d povray ]; then
-	git clone --depth 1 --branch $POVRAY_VERSION https://github.com/POV-Ray/povray povray
-fi
-
-cp build_alpine.sh povray/build.sh
-
-sudo docker build . -t povray_wasm
+bash ./build_docker.sh
 
 cd povray
 
 sudo docker run \
   --cpus=2 \
-  -v $PWD:/usr/src \
+  -v $PWD:/usr/src/build \
   povray_wasm \
-  sh -c 'cd /usr/src && bash build.sh'
\ No newline at end of file
+  sh -c 'cd /usr/src/povray && cp ../build/build_alpine.sh ./build.sh && bash build.sh'
\ No newline at end of file