How to fix runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:545: container init caused: fork/exec: cannot allocate memory in Docker

# Overall memory
free -h

# Detailed memory info
cat /proc/meminfo | head -10

# Per-process memory usage
ps aux --sort=-%mem | head -10

# Memory usage per container
docker stats --no-stream

# Detailed container resource usage
docker stats --format "table {{.Name}}	{{.MemUsage}}	{{.MemPerc}}"

# List all containers
docker ps -a

# Stop specific containers
docker stop <container_name>

# Stop all running containers
docker stop $(docker ps -q)

# Remove stopped containers
docker container prune

# Limit memory when running
docker run -m 512m --memory-swap 1g <image>

# In docker-compose.yml
services:
  app:
    deploy:
      resources:
        limits:
          memory: 512M
        reservations:
          memory: 256M

# Check system logs
dmesg | grep -i "oom\|killed"

# Check Docker events
docker events --filter type=container --filter event=oom

# Inspect specific container
docker inspect <container_name> | grep -i oom

# Add swap space (temporary)
sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

# For Docker Desktop: Settings > Resources > Memory
# Increase the slider and apply changes