Adds docker-compose.yml and package.json to Phoenix app with postgres exposed on random port

add-docker-compose-to-phoenix

#!/bin/bash

# Generate random ports
postgres_port=$((5000 + RANDOM % 1000))
redis_port=$((7000 + RANDOM % 1000))
elastic_port=$((9000 + RANDOM % 1000))

# Set test ports
postgres_test_port=$((postgres_port + 1))
redis_test_port=$((redis_port + 1))
elastic_test_port=$((elastic_port + 1))

# Create docker-compose.yml file
cat > docker-compose.yml << EOF
version: '2'

services:

  postgres:
    image: postgres:13.1
    ports:
      - "${postgres_port}:5432"
    environment:
      POSTGRES_PASSWORD: secret
      POSTGRES_USER: webapp
      POSTGRES_DB: webapp

  postgres_test:
    image: postgres:13.1
    ports:
      - "${postgres_test_port}:5432"
    environment:
      POSTGRES_PASSWORD: secret
      POSTGRES_USER: webapp
      POSTGRES_DB: webapp

#  redis:
#    image: redis:6
#    ports:
#      - "${redis_port}:6379"
#
#  redis_test:
#    image: redis:6
#    ports:
#      - "${redis_test_port}:6379"

#  elastic:
#    image: docker.elastic.co/elasticsearch/elasticsearch:7.10.1
#    ports:
#      - "${elastic_port}:9200"
#
#  elastic_test:
#    image: docker.elastic.co/elasticsearch/elasticsearch:7.10.1
#    ports:
#      - "${elastic_test_port}:9200"
EOF

# Update the dev.exs file
sed -i.bak "s/username: \"postgres\",/username: \"webapp\",/g" config/dev.exs
sed -i.bak "s/password: \"postgres\",/password: \"secret\",/g" config/dev.exs
sed -i.bak "s/hostname: \"localhost\",/hostname: \"0.0.0.0\",/g" config/dev.exs
sed -i.bak "s/database: \"[^\"]*\",/database: \"webapp\",\n  port: ${postgres_port},/g" config/dev.exs
rm config/dev.exs.bak

# Create package.json file
cat > package.json << EOF
{
  "scripts": {
    "phx.server": "mix phx.server",
    "start-compose": "docker-compose up",
    "stop-compose": "docker-compose stop",
    "ecto.migrate": "mix ecto.migrate"
  }
}
EOF