dockerfile: reduce interval and env config

- bitcoind and cln reduce healthcheck time interval
- cln healthcheck no need to use switch case instead use VLS_NETWORK
Signed-off-by: Lakshya Singh <lakshay.singh1108@gmail.com>

lightningd/Dockerfile

@@ -142,7 +142,7 @@ RUN pip3 install \
       requests \
       packaging
 
-HEALTHCHECK --interval=10s --timeout=10s --start-period=15s \
+HEALTHCHECK --interval=5s --timeout=10s --start-period=5s \
     CMD ["/bin/sh", "-c", "/healthcheck.sh"]
 
 ENTRYPOINT ["/entrypoint.sh"]