docs: update readme for demo setup to reference new builder
1. build local docker images
```sh
# from `ockam` repo root
-docker build -t ockam/ockam-dev -f tools/docker/ockam-dev/Dockerfile .
+docker build -t ockam/builder -f tools/docker/elixir/builder/Dockerfile .
docker build -t ockam/ockamd:0.10.1 -f tools/docker/rust/Dockerfile.ockamd .
docker build -t ockam/influxdb-ockamd-via-hub:0.10.1 -f tools/docker/influxdb/Dockerfile.influxdb-ockamd .
docker build -t ockam/telegraf-ockamd-via-hub:0.10.1 -f tools/docker/telegraf/Dockerfile.telegraf-ockamd .
@@ -12,7 +12,8 @@ docker build -t ockam/telegraf-ockamd-via-hub:0.10.1 -f tools/docker/telegraf/Do
2. run the demo steps
```sh
./tools/docker/demo/influxdb.sh influxdb-ockamd-via-ockam-hub
-./tools/docker/demo/influxdb.sh telegraf-ockamd-via-ockam-hub
+./tools/docker/demo/influxdb.sh telegraf-ockamd-via-ockam-hub [RESPONDER-PUBLIC-KEY] [CHANNEL-ADDRESS]
./tools/docker/demo/influxdb.sh telegraf-write
./tools/docker/demo/influxdb.sh influxdb-query
+./tools/docker/demo/influxdb.sh kill-all
```
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