fix env variable

Author: puckpuck

Dockerfile

@@ -2,6 +2,6 @@ FROM nicolaka/netshoot
 
 RUN echo 'alias ll="ls -Ahlp"' >> ~/.bashrc
 RUN echo 'alias kcurl="curl -k -H \"Authorization: Bearer $(cat /var/run/secrets/kubernetes.io/serviceaccount/token)\""' >> ~/.bashrc
-RUN echo 'export KUBERNETES_API="https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT"'
+RUN echo 'export KUBERNETES_API="https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT"' >> ~/.bashrc
 
 CMD ["sleep", "infinity"]