make.service fails when deploying Go project file to AWS Elastic Beanstalk

overflowers,

I've been struggling for hours on end trying to publish a Go application to AWS Elastic Beanstalk.

Have followed helpful tutorials online for what I first thought was dead simple.

One of the tutorials i followed
Another one of the tutorials i followed

An examples which actually compiles on AWS for me

My project structure is now:

The following files are all in my root folder:

application.go
build.sh
Buildfile
Procfile

application.go

package main

import (    
    "github.com/gin-gonic/gin"
)

func main() {
    router := gin.Default()

    router.GET("/user/:name", func(c *gin.Context) {
        name := c.Param("name")
        c.String(http.StatusOK, "Hello %s", name)
    })
    router.Run(":5000")
}

build.sh

go get "github.com/gin-gonic/gin"    //Have tried without quotation marks

go build application.go

Buildfile

make: ./build.sh

Procfile

web: bin/application

I have also read the documentation on AWS website. And from what I can tell- my code, and the code in the demos referred to above, is correct.

I compress the enire contents of my root folder to a .zip file and upload to AWS through the web portal. It fails...and in the error logs i can read:

2020/08/28 23:17:38.902079 [INFO] Executing instruction: RunAppDeployPreBuildHooks
2020/08/28 23:17:38.902095 [INFO] The dir .platform/hooks/prebuild/ does not exist in the application. Skipping this step...
2020/08/28 23:17:38.902100 [INFO] Executing instruction: Golang Specific Build Application
2020/08/28 23:17:38.902104 [INFO] checking Buildfile...
2020/08/28 23:17:38.902110 [INFO] building Golang application with Buildfile
2020/08/28 23:17:38.902148 [INFO] Running command /bin/sh -c systemctl show -p PartOf make.service
2020/08/28 23:17:38.908345 [WARN] Warning: process make is already registered...
Deregistering the process ...
2020/08/28 23:17:38.908368 [INFO] Running command /bin/sh -c systemctl show -p PartOf make.service
2020/08/28 23:17:38.913626 [INFO] Running command /bin/sh -c systemctl is-active make.service
2020/08/28 23:17:38.916919 [INFO] Running command /bin/sh -c systemctl disable make.service
2020/08/28 23:17:39.002192 [INFO] Running command /bin/sh -c systemctl daemon-reload
2020/08/28 23:17:39.086778 [INFO] Running command /bin/sh -c systemctl reset-failed
2020/08/28 23:17:39.092606 [INFO] Running command /bin/sh -c systemctl daemon-reload
2020/08/28 23:17:39.166648 [INFO] Running command /bin/sh -c systemctl reset-failed
2020/08/28 23:17:39.170861 [INFO] Running command /bin/sh -c systemctl is-enabled eb-app.target
2020/08/28 23:17:39.174735 [INFO] Running command /bin/sh -c systemctl enable eb-app.target
2020/08/28 23:17:39.251327 [INFO] Running command /bin/sh -c systemctl start eb-app.target
2020/08/28 23:17:39.256334 [INFO] Running command /bin/sh -c systemctl enable make.service
2020/08/28 23:17:39.338502 [INFO] Running command /bin/sh -c systemctl show -p PartOf make.service
2020/08/28 23:17:39.344691 [INFO] Running command /bin/sh -c systemctl is-active make.service
2020/08/28 23:17:39.348280 [INFO] Running command /bin/sh -c systemctl start make.service
2020/08/28 23:17:39.358198 [ERROR] startProcess Failure: starting process "make" failed: Command /bin/sh -c systemctl start make.service failed with error exit status 1. Stderr:Job for make.service failed because the control process exited with error code. See "systemctl status make.service" and "journalctl -xe" for details.
 
2020/08/28 23:17:39.358222 [ERROR] An error occurred during execution of command [app-deploy] - [Golang Specific Build Application]. Stop running the command. Error: build application failed on command ./build.sh with error: startProcess Failure: starting process "make" failed: Command /bin/sh -c systemctl start make.service failed with error exit status 1. Stderr:Job for make.service failed because the control process exited with error code. See "systemctl status make.service" and "journalctl -xe" for details.

Unfortunately I don't have much experience of this kind of server configuration or any other deployment operations. So I do not understand "process make is already registered..."

...Perhaps someone more experienced in these areas might know what to make of this?

Cheers!

NOTE: The project has been able to compile and run on my computer all the time. It just fails when i try deploying it on the Elastic Beanstalk.

EDIT: Have now also tried deploying with the AWS Command Line Interface. In this case the logfile eb-activity tells me:

Executing: HOME=/tmp /opt/elasticbeanstalk/lib/ruby/bin/ruby /opt/elasticbeanstalk/lib/ruby/bin/foreman start --procfile /tmp/d20200829-3130-13cz1sh/eb-buildtask-0 --root /var/app/staging --env /var/elasticbeanstalk/staging/elasticbeanstalk.env
  /opt/elasticbeanstalk/lib/ruby/lib/ruby/gems/2.2.0/gems/foreman-0.78.0/lib/foreman/process.rb:54:in `spawn': Permission denied - ./build.sh (Errno::EACCES)
    from /opt/elasticbeanstalk/lib/ruby/lib/ruby/gems/2.2.0/gems/foreman-0.78.0/lib/foreman/process.rb:54:in `block in run'