fix(filemanager): swap docker hub images for AWS public ECR

lib/workload/stateless/stacks/filemanager/Dockerfile

@@ -2,15 +2,15 @@
 # When running this microservice from the Docker Compose root, this Dockerfile
 # will build the image, install dependencies, and start the server
 
-FROM lukemathwalker/cargo-chef:latest-rust-1 AS chef
+FROM public.ecr.aws/docker/library/rust:1.81 AS chef
 
 ARG DATABASE_URL
 ENV DATABASE_URL $DATABASE_URL
 
 WORKDIR /app
 
 # rustfmt is used for code gen.
-RUN rustup component add rustfmt
+RUN cargo install cargo-chef && rustup component add rustfmt
 
 FROM chef AS planner
 
@@ -27,7 +27,7 @@ RUN cargo chef cook
 COPY . .
 RUN cargo build --bin filemanager-api-server
 
-FROM debian:bookworm-slim AS runtime
+FROM public.ecr.aws/docker/library/debian:bookworm-slim AS runtime
 
 # curl is used for healthcheck.
 RUN apt -y update && apt -y install curl