Support restricted one-off uses of language models

.local/bin/podllama

@@ -3,7 +3,53 @@
 set -euo pipefail
 IFS=$'\n\t'
 
+if ! PARSED_OPTIONS=$(getopt -o "" --long "offline,volatile" --name "$0" -- "$@"); then
+    echo "Error parsing options." >&2
+    exit 1
+fi
+
+eval set -- "$PARSED_OPTIONS"
+
+offline=false
+volatile=false
+
+while true; do
+    case "$1" in
+        --offline)
+            offline=true
+            shift
+            ;;
+        --volatile)
+            volatile=true
+            shift
+            ;;
+        --)
+            shift
+            break
+            ;;
+        *)
+            echo "Internal error!" >&2
+            exit 1
+            ;;
+    esac
+done
+
 mkdir --parents ~/.local/share/ollama/
-pod_id=$(podman run --detach --rm --volume ~/.local/share/ollama/:/root/.ollama ollama:latest)
-podman exec --interactive --tty "${pod_id}" ollama "$@"
-podman kill "${pod_id}" > /dev/null
+
+if [[ "true" == "${volatile}" ]]; then
+    PODMAN=(podman --transient-store)
+    MOUNTS=()
+else
+    PODMAN=(podman)
+    MOUNTS=(--volume ~/.local/share/ollama/:/root/.ollama)
+fi
+
+if [[ "true" == "${offline}" ]]; then
+    NETWORK=(--network none)
+else
+    NETWORK=()
+fi
+
+pod_id=$("${PODMAN[@]}" run --detach --rm "${MOUNTS[@]}" "${NETWORK[@]}" ollama:latest)
+"${PODMAN[@]}" exec --interactive --tty "${pod_id}" ollama "$@"
+"${PODMAN[@]}" kill "${pod_id}" > /dev/null