Move prod folder out from src folder

The content of the 'prod' folder is meant for building and deploying
a production-ready container service.

src/prod/Containerfile → prod/Containerfile

@@ -1,16 +1,20 @@
-# Podmanfile for deploying ipa-tuura in production mode, using Apache HTTPS
-# server.
-
-# This needs to be built from root directory:
-# podman build -f src/prod/Containerfile .
+# You need a Red Hat subscription to build this container image.
+# You can register your host by following this KCS: https://access.redhat.com/solutions/253273
+#
+# Then, you can build the image by running:
+# podman build -f prod/Containerfile .
+#
 # Or with podman-compose:
-# podman-compose -f src/prod/podman-compose.yaml up -d
+# podman-compose -f prod/podman-compose.yaml up -d
 
 FROM registry.access.redhat.com/ubi9:9.2-755
+
 ENV TZ=Europe/Madrid
 
 LABEL org.opencontainers.image.source=https://github.com/freeipa/ipa-tuura
-LABEL org.opencontainers.image.description="IPA-tuura Container"
+
+# Podmanfile for deploying ipa-tuura in production mode, using Apache HTTPS server
+LABEL org.opencontainers.image.description="Production-ready ipatuura bridge service"
 
 # Install dependencies
 RUN dnf -y update && dnf -y install \