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Deploying Go to Heroku
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Paweł Słomka
February 21, 2019
Programming
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Deploying Go to Heroku
Paweł Słomka
February 21, 2019
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Transcript
@pawel_slomka Deploying Go to Heroku Paweł Słomka
@pawel_slomka @pawel_slomka ABOUT ME • Blogger at mycodesmells.com • Go
developer at Ingrid • Co-organizer of GoWroc meetup • Runner ! • Millenial @pawel_slomka
@pawel_slomka WHY • You have some cool code developed locally
• You want to share that code with the world
@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)
@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) }
@pawel_slomka HOW Minor tweak for Heroku support: package main …
import “os” func main() { … http.ListenAndServe(“:”+os.Getenv(“PORT”), nil) }
@pawel_slomka HOW Add config file (heroku.yml) build: docker: web: Dockerfile
@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"]
@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:
@pawel_slomka IT WORKS $ curl https://my-app.herokuapp.com Hello GoWroc!
@pawel_slomka SUMMARY • Little effort • Little time • Huge
satisfaction • Your code is in the cloud!
@pawel_slomka THANK YOU!