docker: add compose cheat-sheets

docker/compose/kafka/compose.yml

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+services:
+  # ZOOKEEPER ------------------------------------------------------------------------------------
+  zk:
+    image: confluentinc/cp-zookeeper:7.4.1
+    container_name: zk
+    ports:
+      - 2181:2181
+    environment:
+      ZOOKEEPER_CLIENT_PORT: 2181
+      ZOOKEEPER_TICK_TIME: 2000
+    healthcheck:
+      test: ["CMD", "echo", "healthy"]
+      start_period: 5s
+      interval: 5s
+
+  # KAFKA ----------------------------------------------------------------------------------------
+  kafka:
+    image: confluentinc/cp-kafka:7.4.1
+    container_name: kafka
+    depends_on:
+      zk:
+        condition: service_started
+    ports:
+      - 9092:9092
+      - 29092:29092
+    environment:
+      KAFKA_BROKER_ID: 1
+      KAFKA_ZOOKEEPER_CONNECT: zk:2181
+      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
+      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
+      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+    healthcheck:
+      test: "if [[ $(kafka-topics --bootstrap-server localhost:9092 --list | sed '/^[[:blank:]]*$/ d' | wc -l) == 0 ]]; then crash_on_purpose; fi"
+      start_period: 15s
+      interval: 20s
+
+  kafka-setup:
+    image: confluentinc/cp-kafka:7.4.1
+    container_name: kafka-setup
+    depends_on:
+      kafka:
+        condition: service_started
+    command: "bash -c 'echo Waiting for Kafka to be ready... && \
+                       cub kafka-ready -b kafka:29092 1 20 && \
+                       kafka-topics --create --if-not-exists --bootstrap-server kafka:29092 --partitions 1 --replication-factor 1 --topic my-awesome-topic'"
+    environment:
+      # The following settings are listed here only to satisfy the image's requirements.
+      # We override the image's `command` anyways, hence this container will not start a broker.
+      KAFKA_BROKER_ID: ignored
+      KAFKA_ZOOKEEPER_CONNECT: ignored

docker/compose/localstack/compose.yml

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+services:
+  localstack:
+    container_name: localstack
+    image: localstack/localstack:3.0.2
+    environment:
+      # https://docs.localstack.cloud/references/configuration/
+      SERVICES: s3, sqs, dynamodb
+      DEBUG: 1
+    ports:
+      - 4566:4566
+      - 4510-4559:4510-4559
+    volumes:
+      # script to be executed when localstack is ready, see https://docs.localstack.cloud/references/init-hooks/
+      - "./ready.d:/etc/localstack/init/ready.d:ro"
+      - /var/run/docker.sock:/var/run/docker.sock

docker/compose/localstack/ready.d/init.sh

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+#!/usr/bin/env bash
+
+awslocal s3 mb s3://my-bucket
+
+awslocal sqs create-queue --queue-name my-sqs-queue
+
+awslocal dynamodb create-table \
+    --table-name my-dynamodb-table \
+    --key-schema AttributeName=id,KeyType=HASH \
+    --attribute-definitions AttributeName=id,AttributeType=S \
+    --billing-mode PAY_PER_REQUEST
+

docker/compose/postgres/compose.yml

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+services:
+  db:
+    image: postgres:13-alpine
+    container_name: my-db
+    volumes:
+      - ./initdb.d:/docker-entrypoint-initdb.d
+    healthcheck:
+      test: psql postgres --command "SELECT 1" -U postgres
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: my_db
+    ports:
+      - 5432:5432

docker/compose/postgres/initdb.d/install-extensions.sql

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+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

docker/compose/redis/compose.yml

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+services:
+  redis:
+    image: redis:7.2.0-alpine
+    container_name: redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - ./redis.conf:/usr/local/etc/redis/redis.conf:ro
+    command: "redis-server /usr/local/etc/redis/redis.conf"

docker/compose/redis/redis.conf

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+user my-username >my-password on ~* -@all +get +set +ttl +scan