docker-compose.yml: specify AMD64 platform

Several Docker images used by Segment do not work reliably on Mac M1 laptops,
which use the ARM chipset. Commonly, these are images that were built several
years ago, before M1 laptops were in widespread use, and behave unpredictably
when run on an ARM chipset.

The simplest workaround is to ensure that the Docker environment is always
running on x86. This change should ensure that employees with M1 laptops will be
able to reliably start and run Docker containers on this repository.

docker-compose.yml

@@ -9,17 +9,26 @@ services:
     hostname: zookeeper
     image: bitnami/zookeeper:latest
     ports:
-      - "2181:2181"
+    - "2181:2181"
     environment:
       ALLOW_ANONYMOUS_LOGIN: yes
 
   # Zone 1 brokers
+    # If you are on arm64 and experiencing issues with the tests (hangs,
+    # connection reset) then try the following in order:
+
+    # - stopping and removing all downloaded container images
+    # - ensuring you have the latest Docker Desktop version
+    # - factory reset your Docker Desktop settings
+
+    # If you are still running into issues please post in #help-infra-seg.
+    platform: linux/amd64
   kafka1:
     container_name: kafka1
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9092:9092"
+    - "9092:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 1
       KAFKA_CFG_BROKER_RACK: zone1
@@ -30,14 +39,16 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9092
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
 
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64
   kafka2:
     container_name: kafka2
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9093:9092"
+    - "9093:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 2
       KAFKA_CFG_BROKER_RACK: zone1
@@ -48,15 +59,17 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9093
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
 
   # Zone 2 brokers
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64
   kafka3:
     container_name: kafka3
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9094:9092"
+    - "9094:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 3
       KAFKA_CFG_BROKER_RACK: zone2
@@ -67,14 +80,16 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9094
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
 
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64
   kafka4:
     container_name: kafka4
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9095:9092"
+    - "9095:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 4
       KAFKA_CFG_BROKER_RACK: zone2
@@ -85,15 +100,17 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9095
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
 
   # Zone 3 brokers
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64
   kafka5:
     container_name: kafka5
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9096:9092"
+    - "9096:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 5
       KAFKA_CFG_BROKER_RACK: zone3
@@ -104,14 +121,16 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9096
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
 
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64
   kafka6:
     container_name: kafka6
     hostname: 169.254.123.123
     image: bitnami/kafka:${KAFKA_IMAGE_TAG:-2.7.0}
     ports:
-      - "9097:9092"
+    - "9097:9092"
     environment:
       KAFKA_CFG_BROKER_ID: 6
       KAFKA_CFG_BROKER_RACK: zone3
@@ -122,4 +141,6 @@ services:
       KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://169.254.123.123:9097
     restart: on-failure
     depends_on:
-      - zookeeper
+    - zookeeper
+    # See platform comment above for amd64/arm64 troubleshooting
+    platform: linux/amd64