Fix more stuff with openvpn config
diff --git a/containers/xos/Dockerfile.devel b/containers/xos/Dockerfile.devel
index 3ecb278..00fcb14 100644
--- a/containers/xos/Dockerfile.devel
+++ b/containers/xos/Dockerfile.devel
@@ -98,10 +98,10 @@
RUN mkdir -p /opt/openvpn
RUN cp -r /usr/share/easy-rsa/* /opt/openvpn/
RUN cp /opt/xos/services/vpn/vars /opt/openvpn/vars
-RUN . /opt/openvpn/vars
-RUN /opt/openvpn/clean-all
-RUN /opt/openvpn/build-ca --batch
-RUN /opt/openvpn/build-key-server --batch server
-RUN /opt/openvpn/build-dh
+RUN bash source /opt/openvpn/vars
+RUN bash /opt/openvpn/clean-all
+RUN bash /opt/openvpn/build-ca --batch
+RUN bash /opt/openvpn/build-key-server --batch server
+RUN bash /opt/openvpn/build-dh
RUN chmod 777 /opt/openvpn/keys/server.key
RUN chmod 777 /opt/openvpn/keys/dh2048.pem