feat: define the default port for docker and add cargo.toml to docker

Dockerfile

@@ -11,6 +11,7 @@ FROM clux/diesel-cli
 
 COPY --from=builder /app/migrations /application/migrations
 COPY --from=builder /app/Rocket.toml /application/Rocket.toml
+COPY --from=builder /app/Cargo.toml /application/Cargo.toml
 COPY --from=builder /app/entrypoint.sh /application/entrypoint.sh
 COPY --from=builder /app/static /application/static
 COPY --from=builder /app/target/x86_64-unknown-linux-musl/release/rubble /application/rubble

Rocket.toml

@@ -4,4 +4,5 @@ template_dir = "static"
 [production]
 address = "0.0.0.0"
 log = "critical"
+port = 8000
 limits = { forms = 32768 }