diff --git a/.github/workflows/build-and-deploy-branch.yml b/.github/workflows/build-and-deploy-branch.yml
index 28eadc18..968dd87d 100644
--- a/.github/workflows/build-and-deploy-branch.yml
+++ b/.github/workflows/build-and-deploy-branch.yml
@@ -10,6 +10,9 @@ jobs:
     steps:
       - name: Checkout source code
         uses: actions/checkout@v2
+      
+      - name: Install zip
+        run: apt install -y zip
 
       - name: Build Spec
         run: bash ./build.sh
diff --git a/build.sh b/build.sh
index de221e2e..d478584b 100755
--- a/build.sh
+++ b/build.sh
@@ -20,12 +20,11 @@ docker run --rm -i -v $PROJECT:/src anskaffelser/validator:2.1.0 build -x -t -n
 for sch in $PROJECT/rules/sch/*.sch; do
     docker run --rm -i -v $PROJECT:/src -v $PROJECT/target/schematron:/target klakegg/schematron prepare /src/rules/sch/$(basename $sch) /target/$(basename $sch)
 done
-docker run --rm -i -v $PROJECT/target/site/files:/src alpine:3.6 rm -rf /src/PEPPOLBIS-Upgrade-Schematron.zip
-docker run --rm -i -v $PROJECT/target/schematron:/src -v $PROJECT/target/site/files:/target -w /src kramos/alpine-zip -r /target/PEPPOLBIS-Upgrade-Schematron.zip .
+rm -rf /src/PEPPOLBIS-Upgrade-Schematron.zip
+zip -r target/site/files/PEPPOLBIS-Upgrade-Schematron.zip target/schematron
 
 # Example files
-docker run --rm -i -v $PROJECT/target/site/files:/src alpine:3.6 rm -rf /src/PEPPOLBIS-Examples.zip
-docker run --rm -i -v $PROJECT/rules/examples:/src -v $PROJECT/target/site/files:/target -w /src kramos/alpine-zip -r /target/PEPPOLBIS-Examples.zip .
+zip -r target/site/files/PEPPOLBIS-Examples.zip rules/examples 
 
 # Guides
 docker run --rm -i -v $PROJECT:/documents -v $PROJECT/target:/target difi/asciidoctor