Unnamed Containers

Doing some cleanup in local docker I found docker system df -v returned two unnamed images:
REPOSITORY                                   TAG         IMAGE ID       CREATED             SIZE      SHARED SIZE   UNIQUE SIZE   CONTAINERS
<none>                                       <none>      7de0dedd123b   11 months ago       30MB      7.798MB       22.25MB       1
<none>                                       <none>      2e2cb40c55b8   14 months ago       676MB     0B            675.8MB       1


Checking with docker ps -a --filter ancestor=7de0dedd123b and sudo docker ps -a --filter ancestor=2e2cb40c55b8, turns out these are Immich related:
CONTAINER ID   IMAGE              COMMAND                  CREATED      STATUS                  PORTS      NAMES
d04aacdc688d   redis:6.2-alpine   "docker-entrypoint.s…"   6 days ago   Up 47 hours (healthy)   6379/tcp   immich_redis

CONTAINER ID   IMAGE              COMMAND                  CREATED      STATUS                  PORTS      NAMES
a466616421ba   tensorchord/pgvecto-rs:pg14-v0.2.0   "docker-entrypoint.s…"   6 days ago   Up 47 hours (healthy)   5432/tcp   immich_postgres


Any idea why these are unnamed, whether or not I can delete them, and how to avoid this in future?
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