initial commit

Dockerfile

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+from alpine
+RUN apk update && apk add --no-cache docker-cli
+COPY ./get_stats.sh /get_stats.sh
+
+CMD [ "/bin/sh", "/get_stats.sh" ] 
+# ENTRYPOINT ["tail", "-f", "/dev/null"]

docker-compose.yaml

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+version: "3"
+services:
+  whoami:
+    container_name: whoami
+    build: .
+    # image: sandman
+    environment:
+    - PORT=81
+    ports:
+    - 81:81
+    # command: tail -F asdf
+    command: /bin/sh /get_stats.sh
+
+  whoami2:
+    container_name: whoami2
+    image: containous/whoami
+    command: --port 81
+    network_mode: service:whoami
+    depends_on: 
+    - whoami
+    # ports:
+    # - 80:80

get_stats.sh

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+#!/bin/sh
+while [ 1 ];
+do 
+    echo "$(netstat -n | grep $PORT | wc -l) active connections on $PORT"
+    echo "tx packets: $(cat /sys/class/net/eth0/statistics/tx_packets)"
+    echo "rx packets: $(cat /sys/class/net/eth0/statistics/rx_packets)"
+    sleep 1;
+done