docker: fix ltcd ports

Fixes execution in `start-ltcctl.sh` and simplifies building `PARAMS`


fixes `ltcctl` execution

docker/ltcd/Dockerfile

@@ -14,17 +14,14 @@ RUN GO111MODULE=on go install . ./cmd/ltcctl ./cmd/gencerts
 FROM alpine as final
 
 # Expose mainnet ports (server, rpc)
-EXPOSE 8333 8334
+EXPOSE 9333 9334
 
 # Expose testnet ports (server, rpc)
-EXPOSE 18333 18334
+EXPOSE 19334 19335
 
 # Expose simnet ports (server, rpc)
 EXPOSE 18555 18556
 
-# Expose segnet ports (server, rpc)
-EXPOSE 28901 28902
-
 # Copy the compiled binaries from the builder image.
 COPY --from=builder /go/bin/ltcctl /bin/
 COPY --from=builder /go/bin/ltcd /bin/