allow different prefixes to allow testing of different students in parallel

lec/07-compose/forward/Dockerfile

@@ -2,4 +2,4 @@ FROM ubuntu:24.04
 RUN apt-get update && apt-get install -y python3 python3-pip curl iproute2
 COPY requirements.txt /tmp/requirements.txt
 RUN pip3 install -r /tmp/requirements.txt --break-system-packages
-CMD ["python3", "-m", "jupyterlab", "--no-browser", "--ip=0.0.0.0", "--port=????", "--allow-root", "--NotebookApp.token=''"]
+CMD ["python3", "-m", "jupyterlab", "--no-browser", "--ip=0.0.0.0", "--port=600", "--allow-root", "--NotebookApp.token=''"]

p2/README.md

@@ -39,20 +39,20 @@ it).  Note that there are two services, "cache" with 3 replicas and
 You should have Dockerfiles named "Dockerfile.cache" and "Dockerfile.dataset" that we can build like this to produce the Docker images for these two services:
 
 ```
-docker build . -f Dockerfile.cache -t cache
-docker build . -f Dockerfile.dataset -t dataset
+docker build . -f Dockerfile.cache -t p2-cache
+docker build . -f Dockerfile.dataset -t p2-dataset
 ```
 
 Note that the compose file assumes there is a "PROJECT" environment
-variable.  The tester will make use of this.  You can set it however you like with this command in your environment:
+variable.  You can set it to p2 in your environment:
 
 ```
-export PROJECT=????
+export PROJECT=p2
 ```
 
-Whatever you set will be a prefix for the container names.  For
+Whatever this is set to will be a prefix for the container names.  For
 example, if it is "abc", your first cache container will be named
-"abc-cache-1".
+"abc-cache-1".  The autograder will may use a prefix other than p2.
 
 Web requests to the caching layer specify a zipcode, and the number of
 addresses that should be returned (the "limit").  To find the answer,

p2/docker-compose.yml

@@ -2,15 +2,15 @@ name: ${PROJECT}
 
 services:
         cache:
-                image: cache
+                image: ${PROJECT}-cache
                 deploy:
                         replicas: 3
                 ports:
-                 - "8000-8002:8080"
+                 - "8080"
                 environment:
                  - PROJECT=${PROJECT}
         dataset:
-                image: dataset
+                image: ${PROJECT}-dataset
                 deploy:
                         replicas: 2
                 environment: