Initial

traces/README.md

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+# Traces

traces/trace.sh

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+#!/bin/bash
+
+set -xe
+
+DB_CONTAINER_ID=$(docker run -d -e POSTGRES_PASSWORD=test postgres:18)
+
+echo $DB_CONTAINER_ID
+
+mkdir -p output/
+
+TRACE_CONTAINER_ID=$(docker run --rm \
+  --network container:$DB_CONTAINER_ID \
+  --cap-add NET_RAW \
+  --cap-add NET_ADMIN \
+  -v "$PWD/output:/captures" \
+  -d \
+  nicolaka/netshoot \
+  tcpdump -i lo -nn -U -w /captures/container.pcap)
+
+sleep 3
+
+echo "SELECT 1;" | docker run --rm --network container:$DB_CONTAINER_ID -i postgres:18 psql -h localhost -p 5432 -U postgres;
+
+sleep 3
+
+docker stop $TRACE_CONTAINER_ID
+docker stop $DB_CONTAINER_ID