Adding image for debugging and traffic shaping (#1394)

Dockerfile

@@ -37,6 +37,15 @@ COPY --from=temporal-builder /temporal/temporal-server /usr/local/bin
 FROM temporal-server AS temporal-auto-setup
 CMD /start.sh autosetup
 
+##### Debug configuration for Temporal with additional set of tools #####
+FROM temporal-server as temporal-debug
+# iproute2 contains tc, which can be used for traffic shaping in resiliancy testing. 
+RUN apk add iproute2
+# Add debug configuration file.
+COPY docker/debug-configure.sh /debug-configure.sh
+# Run configuration script before the service startup.
+CMD /debug-configure.sh && /start.sh autosetup
+
 ##### Temporal CLI (tctl) #####
 FROM temporalio/base-server:1.0.0 AS temporal-tctl
 WORKDIR /etc/temporal

docker/debug-configure.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -x
+
+# Adding artificial delay for all network calls.
+# In order to verify that there is a delay, you can login to the container and run:
+# > tc qdisc show dev eth0
+# To change the delay inside of the running container, run:
+# > tc qdisc del dev eth0 root && tc qdisc add dev eth0 root netem delay 100ms
+#
+# Read more about what's possible with tc here:
+# https://www.badunetworks.com/traffic-shaping-with-tc/
+if [ ! -z "$TEMPORAL_DBG_NETWORK_DELAY_MS" ]; then
+	tc qdisc add dev eth0 root netem delay "${TEMPORAL_DBG_NETWORK_DELAY_MS}ms" 
+fi