comms: use guest-tools image for guest rename

dockerfiles/Dockerfile.comms-guest-tools

@@ -0,0 +1,5 @@
+FROM python:3.11-slim
+
+ENV PIP_DISABLE_PIP_VERSION_CHECK=1
+
+RUN pip install --no-cache-dir requests psycopg2-binary

services/comms/guest-name-job.yaml

@@ -62,7 +62,7 @@ spec:
                 defaultMode: 0555
           containers:
             - name: rename
-              image: python:3.11-slim
+              image: registry.bstein.dev/bstein/comms-guest-tools:0.1.0
               volumeMounts:
                 - name: vault-scripts
                   mountPath: /vault/scripts
@@ -94,7 +94,6 @@ spec:
                 - |
                   set -euo pipefail
                   . /vault/scripts/comms_vault_env.sh
-                  pip install --no-cache-dir requests psycopg2-binary >/dev/null
                   python - <<'PY'
                   import base64
                   import os