docs: document one-command Docker installation

scripts/docker-smoke.sh

@@ -7,6 +7,11 @@ marker="smoke-$(date +%s)-$$"
 headers=""
 smoke_project=${SMOKE_PROJECT:-"thothii-smoke-$(date +%s)-$$"}
 keep_resources=${KEEP_SMOKE_RESOURCES:-0}
+bundle=$(mktemp)
+printf '%s\n' '# disposable smoke bundle' 'THT_MODEL_API_KEY=smoke-model-key' >"$bundle"
+chmod 0600 "$bundle"
+export THT_SECRETS_FILE="$bundle"
+trap 'rm -f "$bundle"' EXIT HUP INT TERM
 
 case "$smoke_project" in
   thothii)
@@ -20,7 +25,7 @@ case "$smoke_project" in
 esac
 
 compose() {
-  docker compose --project-name "$smoke_project" --profile external "$@"
+  docker compose --project-name "$smoke_project" "$@"
 }
 # Avoid colliding with a developer's existing service. Production/developer Compose still
 # defaults to 8080; a published port of 0 asks Docker for a free ephemeral smoke port.
@@ -28,6 +33,7 @@ export THOTH_HTTP_PORT=${THOTH_HTTP_PORT:-0}
 
 cleanup() {
   if [ -n "$headers" ]; then rm -f "$headers"; fi
+  rm -f "$bundle"
   if [ "$keep_resources" = "1" ]; then
     echo "Keeping smoke resources for project $smoke_project (KEEP_SMOKE_RESOURCES=1)." >&2
   else