Initial commit

Author: MattiasAng

.gitignore

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+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work

LICENSE

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+MIT License
+
+Copyright (c) 2024 Castor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Platform Engineer Technical Test
+
+Welcome to Castor Platform Engineer technical test. 
+This test is designed to assess your technical skills and knowledge with containerization.
+
+## Assignment
+
+Your task is to build a container image that runs the Go web application in this repository.
+
+As part of this task you will need to:
+
+- Build a container image that runs the Go web application.
+  - Allow the environment variable `PORT` to be configurable, but with a default value.
+  - No constraints on the base image or the container runtime.
+- Provide instructions on how to build and run the container image in a README file.
+- Create a CI pipeline that builds the container image and pushes it to a registry.
+  - The container must be able to run on Linux x86_64 and ARM processors both.
+  - You can use any CI tool you like, but the pipeline needs to be defined in code.
+
+## Submission
+
+1. Fork this repository.
+1. Complete the task and commit it to your fork.
+1. Send us a link to your fork. If you would like to keep it private, please add `@MattiasAng` and `@zoni` as collaborators.

go.mod

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+module github.com/castoredc/platform-engineer
+
+go 1.21.6

main.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+)
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte("Hello Platform Engineer candidate!"))
+}
+
+func main() {
+	http.HandleFunc("/", handler)
+
+	port := os.Getenv("PORT")
+	if port == "" {
+		log.Fatal("PORT environment variable must be set")
+	}
+
+	err := http.ListenAndServe(fmt.Sprintf(":%s", port), nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+}