fix: druid src path

Author: dervoeti

druid/Dockerfile

@@ -47,7 +47,7 @@ RUN --mount=type=cache,id=maven-${PRODUCT},uid=${STACKABLE_USER_UID},target=/sta
     --mount=type=cache,id=npm-${PRODUCT},uid=${STACKABLE_USER_UID},target=/stackable/.npm \
     --mount=type=cache,id=cache-${PRODUCT},uid=${STACKABLE_USER_UID},target=/stackable/.cache \
     <<EOF
-cd apache-druid-${PRODUCT}-src
+cd src && \
 cd "$(/stackable/patchable --images-repo-root=. checkout druid ${PRODUCT})" && \
 mvn --batch-mode --no-transfer-progress clean install -Pdist,stackable-bundle-contrib-exts -DskipTests -Dmaven.javadoc.skip=true
 mv distribution/target/apache-druid-${PRODUCT}-bin/apache-druid-${PRODUCT} /stackable/