Deploying Go to Heroku

1. @pawel_slomka Deploying Go 
 to Heroku Paweł Słomka
2. @pawel_slomka @pawel_slomka ABOUT ME • Blogger at mycodesmells.com • Go developer at Ingrid • Co-organizer of GoWroc meetup • Runner ! • Millenial @pawel_slomka
3. @pawel_slomka WHY • You have some cool code developed locally • You want to share that code with the world
4. @pawel_slomka WHERE • There a few options to choose from
 (Google App Engine, AWS, Azure, etc.) • Heroku is cool as well • Multiple languages support • Docker support • Free tier (with limitations, but enough for development)
5. @pawel_slomka HOW I have the following code: package main import “fmt” import “net/http” func main() { http.HandleFunc(“/“, func(rw http.ResponseWriter, _ *http.Request) { fmt.Fprint(rw, “Hello GoWroc!”) } http.ListenAndServe(“:8080”, nil) }
6. @pawel_slomka HOW Minor tweak for Heroku support: package main … import “os” func main() { … http.ListenAndServe(“:”+os.Getenv(“PORT”), nil) }
7. @pawel_slomka HOW Add config file (heroku.yml) build: docker: web: Dockerfile
8. @pawel_slomka HOW Add Dockerfile FROM golang:stretch as build COPY . /src WORKDIR /src RUN go build -o /app . ### FROM heroku/heroku:18 COPY --from=build /app /app CMD ["/app"]
9. @pawel_slomka DEPLOY Creating an app at Heroku heroku create my-app heroku container:push -a my-app web Publishing image in Heroku registry: heroku container:release -a my-app web Publishing image in Heroku registry:
10. @pawel_slomka IT WORKS $ curl https://my-app.herokuapp.com Hello GoWroc!
11. @pawel_slomka SUMMARY • Little effort • Little time • Huge satisfaction • Your code is in the cloud!
12. @pawel_slomka THANK YOU!