FROM golang:1.18-bullseye

WORKDIR /app

RUN go install github.com/cosmtrek/air@latest

CMD ["air", "-d"]

version: "3.9"

services:
  app:
    build:
      context:    .
      dockerfile: Dockerfile
    working_dir: /app
    ports:
      - "8800:8800"
    volumes:
      - ./:/app

package main

import "fmt"

func main() {
    fmt.Println("Hello")
}

# Config file for [Air](https://github.com/cosmtrek/air) in TOML format

# Working directory
# . or absolute path, please note that the directories following must be under root.
root = "."
tmp_dir = ".tmp"

[build]
# Just plain old shell command. You could use `make` as well.
cmd = "go build -o .tmp ./cmd/app"
# Binary file yields from `cmd`.
bin = ".tmp/app"
# Customize binary, can setup environment variables when run your app.
full_bin = "./.tmp/app"
# Watch these filename extensions.
include_ext = ["go", "tpl", "tmpl", "html", "local"]
# Ignore these filename extensions or directories.
exclude_dir = [".tmp"]
# Watch these directories if you specified.
include_dir = []
# Exclude files.
exclude_file = []
# Exclude specific regular expressions.
exclude_regex =  ["_test.go"]
# Exclude unchanged files.
exclude_unchanged = true
# Follow symlink for directories
follow_symlink = true
# This log file places in your tmp_dir.
log = ".tmp/air.log"
# It's not necessary to trigger build each time file changes if it's too frequent.
delay = 500 # ms
# Stop running old binary when build errors occur.
stop_on_error = true
# Send Interrupt signal before killing process (windows does not support this feature)
send_interrupt = false
# Delay after sending Interrupt signal
kill_delay = 500 # ms

[log]
# Show log time
time = true

[color]
# Customize each part's color. If no color found, use the raw app log.
main = "magenta"
watcher = "cyan"
build = "yellow"
runner = "green"

[misc]
# Delete tmp directory on exit
clean_on_exit = true

docker compose up

Attaching to app-1
app-1         | 
app-1         |   __    _   ___  
app-1         |  / /\  | | | |_) 
app-1         | /_/--\ |_| |_| \_ , built with Go 
app-1         | 
app-1         | [debug] mode
app-1         | [10:00:19] CWD: /app
app-1         | [10:00:19] mkdir /app/.tmp
app-1         | [10:00:19] watching .
......................
app-1         | [10:00:19] running...
app-1         | [10:00:19] running process pid 88
app-1         | Hello