Tools and fixes for local stacks, environment files, ports, volumes, service health and reproducible Docker Compose debugging.
Practical checklist
- Keep generated compose files as starter templates, then review ports, volumes and secrets.
- Use .env.example for documentation and keep real .env files out of version control.
- Check service health and logs before blaming application code.
Tools
Generate starter docker-compose.yml snippets for common local development stacks.
Open tool ENV .env GeneratorGenerate clean .env starter files for local development, app configuration, databases, Redis, mail and API placeholders.
Open tool Cron Cron Expression ExplainerExplain common five-field cron expressions and catch basic schedule mistakes before adding a job to production.
Open tool Time Unix Timestamp ConverterConvert Unix timestamps to readable dates, generate current timestamps and debug log, JWT and scheduling issues.
Open toolError fixes
A port allocation error means Docker cannot bind the host port requested in docker-compose.yml. Find what owns the port before changing random service config.
Open fix Docker Docker No Space Left on Device FixDocker can fill disks with images, build cache, stopped containers, volumes and logs. Check usage before deleting data.
Open fix Docker Docker Permission Denied /var/run/docker.sock FixDocker socket permission errors mean the current user or process cannot talk to the Docker daemon.
Open fix Docker Docker Compose Service Unhealthy FixAn unhealthy container is running but failing its healthcheck. Debug the healthcheck command and the service logs together.
Open fixExamples
A starter local stack for PHP apps that need Nginx and MySQL. Review paths, ports and secrets before production.
Open example ENV .env Example for Node.js and PostgreSQLA sanitized .env.example template for documenting local development variables without committing real secrets.
Open example