diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..f087b429
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.tar.gz filter=lfs diff=lfs merge=lfs -text
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 70e22f87..328dea92 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -3,6 +3,9 @@ name: Build & publish zooma images
 on:
   push:
     branches: [ "dev", "stable" ]
+  pull_request:
+      branches:
+        - dev
 
 env:
   REGISTRY: ghcr.io
@@ -17,6 +20,11 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+        with:
+          lfs: true
+
+      - name: Pull Git LFS files
+        run: git lfs pull
 
       - name: Log in to the Container registry
         uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
@@ -28,5 +36,10 @@ jobs:
       - name: Build and push zooma Docker image
         run: |
           docker build -t ghcr.io/ebispot/zooma:${{ github.sha }} .
-          docker tag ghcr.io/ebispot/zooma:${{ github.sha }} ghcr.io/ebispot/zooma:${{ github.ref_name }}
+          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
+            TAG="PR-${{ github.event.pull_request.number }}"
+          else
+            TAG="${{ github.ref_name }}"
+          fi
+          docker tag ghcr.io/ebispot/zooma:${{ github.sha }} ghcr.io/ebispot/zooma:${TAG}
           docker push --all-tags ghcr.io/ebispot/zooma
diff --git a/Dockerfile b/Dockerfile
index 0c2b42c5..9ff21471 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,16 +6,22 @@ ENV ZOOMA_OPTS="-Xms1g -Xmx4g"
 RUN mkdir /opt/zooma_github /opt/zooma
 RUN apt-get update && apt-get install -y nano maven
 COPY . /opt/zooma_github/
+
+RUN rm -rf /root/.m2/
+RUN tar -xvzf /opt/zooma_github/ols-client/lib/m2directory.tar.gz -C /root/
+
 ENV OJDBC6="https://www.oracle.com/webapps/redirect/signon?nexturl=https://download.oracle.com/otn/utilities_drivers/jdbc/11204/ojdbc6.jar"
 RUN wget $OJDBC6 -O /lib/ojdbc6.jar \
     && mvn install:install-file -DgroupId=com.oracle -DartifactId=ojdbc6 -Dpackaging=jar -Dversion=11.2.0.4 -Dfile=/lib/ojdbc6.jar \
     && test /root/.m2/repository/com/oracle/ojdbc6/11.2.0.4/ojdbc6-11.2.0.4.jar
+
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-lodestar/lib/jena-core-2.12.0.jar -DgroupId=org.apache.jena -DartifactId=jena-core -Dversion=2.12.0
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-lodestar/lib/jena-arq-2.12.0.jar -DgroupId=org.apache.jena -DartifactId=jena-arq -Dversion=2.12.0
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-lodestar/lib/lode-core-api-1.3.jar -DgroupId=ebi-lode -DartifactId=lode-core-api -Dversion=1.3
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-lodestar/lib/lode-virtuoso-impl-1.3.jar -DgroupId=ebi-lode -DartifactId=lode-virtuoso-impl -Dversion=1.3
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-ui/lib/jackson-mapper-asl-1.5.3.jar -DgroupId=org.codehaus.jackson -DartifactId=jackson-mapper-asl -Dversion=1.5.3
 RUN mvn install:install-file -DcreateChecksum=true -Dpackaging=jar -Dfile=/opt/zooma_github/zooma-ui/lib/jackson-core-asl-1.5.3.jar -DgroupId=org.codehaus.jackson -DartifactId=jackson-core-asl -Dversion=1.5.3
+
 RUN cd /opt/zooma_github && mvn clean package
 RUN mkdir /opt/tmp && unzip /opt/zooma_github/zooma-builder-app/target/zooma-builder.zip -d /opt/tmp
 RUN cp /opt/zooma_github/zooma-ui/target/zooma.war /usr/local/tomcat/webapps/
diff --git a/ols-client/lib/m2directory.tar.gz b/ols-client/lib/m2directory.tar.gz
new file mode 100644
index 00000000..19e93c0e
--- /dev/null
+++ b/ols-client/lib/m2directory.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5ead688d4717b109b0f0314b6126481244915bd7378184d2b6a4a80c8c1d87bc
+size 540467695