Added container port example using python3 http server

Dockerfile

@@ -16,5 +16,11 @@ RUN make
 # Final stage - start fresh and don't carry over the build artifacts
 FROM ghcr.io/nearnodeflash/nnf-mfu:master
 
+# Install python3 to make a simple http server available
+RUN apt-get update && apt-get install -y \
+    python3 \
+    curl \
+ && rm -rf /var/lib/apt/lists/*
+
 # Copy application from build stage into final stage
 COPY --from=build /src/mpi_hello_world /usr/bin/mpi_hello_world

nnf-container-example.yaml

@@ -8,6 +8,8 @@ data:
   storages:
     - name: DW_JOB_my_storage
       optional: false
+  # $NNF_CONTAINER_PORT can be used to get the port number(s)
+  numPorts: 1
   mpiSpec:
     mpiReplicaSpecs:
       Launcher:
@@ -20,6 +22,12 @@ data:
                   - mpirun
                   - mpi_hello_world
                   - "$(DW_JOB_my_storage)"
+                  # An example webserver can be started using python
+                  # - mpirun
+                  # - python3
+                  # - -m
+                  # - http.server
+                  # - $(NNF_CONTAINER_PORT)
       Worker:
         template:
           spec: