Makefile/Dockerfile: fix nonroot user usage

When using distroless tag `nonroot` we don't need to use the USER
directive in the Dockerfile.
Plus, nonroot can't write to /app or anywhere else so we should prefix
the db path with nonroot's home as well in order to avoid a sketchy
permission denied.

Signed-off-by: Antonio Murdaca <amurdaca@redhat.com>

Dockerfile

@@ -14,7 +14,6 @@ FROM gcr.io/distroless/static-debian12:nonroot
 
 WORKDIR /app
 COPY --from=builder /app/fdo_server /app/fdo_server
-USER nonroot
 
 ENTRYPOINT ["./fdo_server"]
 CMD []

Makefile

@@ -26,7 +26,7 @@ build:
 # Run the Docker container with all flags
 run:
 	${CONTAINER_RUNTIME} run -v $(PWD)/app-data:/app-data:rw --name $(CONTAINER_NAME) -d --network=$(NETWORK) $(IMAGE_NAME) \
-		-db $(DB_PATH) \
+		-db /home/nonroot/$(DB_PATH) \
 		$(if $(DB_PASS),-db-pass $(DB_PASS)) \
 		$(DEBUG) \
 		-http $(HTTP_ADDR) \