Updating default stacks-node CMD for release dockerfiles

Author: wileyj

.github/actions/dockerfiles/alpine/Dockerfile.release

@@ -15,4 +15,4 @@ RUN case ${TARGETPLATFORM} in \
 
 FROM alpine
 COPY --from=builder /out/* /bin/
-CMD ["/bin/stacks-node run --config /signer-config.toml"]
+CMD ["/bin/stacks-node mainnet"]

.github/actions/dockerfiles/debian/Dockerfile.release

@@ -15,4 +15,4 @@ RUN case ${TARGETPLATFORM} in \
 
 FROM debian:stable-slim
 COPY --from=builder /out/* /bin/
-CMD ["/bin/stacks-signer run --config /signer-config.toml"]
+CMD ["/bin/stacks-node mainnet"]