move to installing via the ookla method

Dockerfile

@@ -1,8 +1,9 @@
 FROM debian:bullseye-slim
 #
 COPY ookla_speedtest_cli.list /
-RUN cat /ookla_speedtest_cli.list >> /etc/apt/sources.list
-RUN apt update && apt install python3 python3-pip iputils-ping speedtest -y
+RUN apt update && apt install curl
+RUN curl -s https://packagecloud.io/install/repositories/ookla/speedtest-cli/script.deb.sh | bash
+RUN apt install python3 python3-pip iputils-ping speedtest -y
 COPY logspeedtest.py /usr/local/bin/
 COPY requirements.txt /
 COPY init.sh /