WORKDIR /tmp/policy-install
 
 COPY install-drools.zip apps.zip docker-install.sh do-start.sh wait-for-port.sh ./
-ADD http://repo1.maven.org/maven2/org/flywaydb/flyway-commandline/4.2.0/flyway-commandline-4.2.0.tar.gz /opt/app
 
 RUN unzip install-drools.zip && \
     unzip apps.zip && \
     rm install-drools.zip apps.zip && \
     chown -R policy * && \
     chmod +x *.sh && \
-    ln -s /opt/app/flyway-4.2.0 /opt/app/flyway && \
-    ln -s /opt/app/flyway/flyway /usr/local/bin
+    wget http://repo1.maven.org/maven2/org/flywaydb/flyway-commandline/4.2.0/flyway-commandline-4.2.0.tar.gz && \
+    tar -C /opt/app -xzf flyway-commandline-4.2.0.tar.gz && \
+    chmod +x /opt/app/flyway-4.2.0/flyway && \
+    ln -f -s /opt/app/flyway-4.2.0 /opt/app/flyway && \
+    ln -f -s /opt/app/flyway/flyway /usr/local/bin
 
 USER policy
 CMD ./do-start.sh