feat: add crond container definitions

crates/daemons/crond/Dockerfile

@@ -0,0 +1,10 @@
+# Build Stage
+FROM ghcr.io/revoltchat/base:latest AS builder
+FROM debian:12 AS debian
+
+# Bundle Stage
+FROM gcr.io/distroless/cc-debian12:nonroot
+COPY --from=builder /home/rust/src/target/release/revolt-crond ./
+
+USER nonroot
+CMD ["./revolt-crond"]