diff --git a/Dockerfile b/Dockerfile
index 4d1dd06..bbf9398 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,16 +1,19 @@
-FROM alpine
+FROM alpine AS builder
 
-MAINTAINER tabledevil
 
 COPY nsrl /nsrl
-RUN apk add -U tini gcc libc-dev python-dev py-pip p7zip python \
-  && pip install pybloom \
+RUN apk add -U tini alpine-sdk python3 python3-dev py3-pip p7zip \
+  && python3 -m pip install git+https://github.com/jaybaird/python-bloomfilter/ \
   && /nsrl/shrink_nsrl.sh \
-  && apk del --purge gcc libc-dev python-dev py-pip p7zip \
+  && apk del --purge alpine-sdk py3-pip python3-dev p7zip \
   && rm -rf /tmp/* /root/.cache /var/cache/apk/* /nsrl/shrink_nsrl.sh
 
+FROM alpine
+LABEL maintainer="tabledevil"
+COPY --from=builder / /
+
 WORKDIR /nsrl
 
-ENTRYPOINT ["/sbin/tini","--","/nsrl/search.py"]
+ENTRYPOINT ["/sbin/tini","--","python3","/nsrl/search.py"]
 
 CMD ["-h"]
diff --git a/nsrl/shrink_nsrl.sh b/nsrl/shrink_nsrl.sh
index 90208b7..f43836b 100755
--- a/nsrl/shrink_nsrl.sh
+++ b/nsrl/shrink_nsrl.sh
@@ -14,7 +14,7 @@ hashfile_name=$(cat /nsrl/nsrl.conf | grep 'hashfile_name' | cut -f2- -d= | grep
 echo "hashfile_name=${hashfile_name}"
 build_date=$(date +%Y%M%d_%H%M)
 echo "build_date=${build_date}"
-
+ls /nsrl/*.zip
 #check if a zipfile was provided
 if [ -f /nsrl/*.zip ]; then
   zip_filename=$(ls /nsrl/*.zip | head -n1)
@@ -28,11 +28,12 @@ else
   #Downloading and Hashing at the same time
   zip_md5=$(wget -O - "${rds_url}" 2>/dev/null | tee "/nsrl/${zip_filename}" | md5sum | cut -f1 -d" ")
   rds_version=$(wget -O - "${version_url}" 2>/dev/null | tee "/nsrl/.version" | head -n1 )
+  zip_filename=$(ls /nsrl/*.zip | head -n1)
 fi
 
 
 echo "[INFO] Unzip NSRL Database zip to /nsrl/ ..."
-7z x -o/nsrl/ "/nsrl/${zip_filename}"
+7z e "${zip_filename}" -o/nsrl/ NSRLFile.txt -r 
 
 echo "[INFO] Counting Hashes in /nsrl/${hashfile_name} ..."
 #counting lines in hashfile without headline
@@ -40,7 +41,7 @@ let hash_count=$(cat "/nsrl/${hashfile_name}"|wc -l )-1
 echo "[INFO] /nsrl/${hashfile_name} contains ${hash_count} Hashes"
 
 echo "[INFO] Build bloomfilter from NSRL Database ..."
-cd /nsrl && python /nsrl/build.py -e "${error_rate}" -n "${hash_count}"
+cd /nsrl && python3 /nsrl/build.py -e "${error_rate}" -n "${hash_count}"
 echo "[INFO] Listing created files ..."
 ls -lah /nsrl
 
@@ -54,5 +55,4 @@ echo "build_date = ${build_date}" >> /nsrl/nsrl.conf
 echo "zip_filename = ${zip_filename}" >> /nsrl/nsrl.conf
 echo "zip_md5 = ${zip_md5}" >> /nsrl/nsrl.conf
 echo "rds_version = ${rds_version}" >> /nsrl/nsrl.conf
-echo "hash_count = ${hash_count}" >> /nsrl/nsrl.conf
 cat /nsrl/nsrl.conf