Error when creating container with golang docker engine - sockets

Question

I am creating a project in Go and I am using both "github.com/docker/docker/client" and "github.com/docker/docker/api/types", but when I try and create a container I get the following error:
ERROR: 2016/10/03 22:39:26 containers.go:84: error during connect: Post https://%2Fvar%2Frun%2Fdocker.sock/v1.23/containers/create: http: server gave HTTP response to HTTPS client
I can't understand why this is happening and it only happened after using the new golang docker engine(the old "github.com/docker/engine-api" is now deprecated).
The code isn't anything complicated, so I wonder if I am missing something:
resp, err := cli.Pcli.ContainerCreate(context.Background(), initConfig(), nil, nil, "")
if err != nil {
return err
}
And the initConfig that is called does the following:
func initConfig() (config *container.Config) {
mount := map[string]struct{}{"/root/host": {}}
return &container.Config{Image: "leadis_image", Volumes: mount, Cmd: strslice.StrSlice{"/root/server.py"}, AttachStdout: true}}
Also here is my dockerfile
FROM debian
MAINTAINER Leadis Journey
LABEL Description="This docker image is used to compile and execute user's program."
LABEL Version="0.1"
VOLUME /root/host/
RUN apt-get update && yes | apt-get upgrade
RUN yes | apt-get install gcc g++ python3 make
COPY container.py /root/server.py
EDIT
Just tried to test it with a simpler program
package main
import (
"fmt"
"os"
"io/ioutil"
"github.com/docker/docker/client"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/strslice"
"golang.org/x/net/context"
)
func initConfig() (config *container.Config) {
mount := map[string]struct{}{"/root/host": {}}
return &container.Config{Image: "leadis_image", Volumes: mount, Cmd: strslice.StrSlice{"/root/server.py"}, AttachStdout: true}
}
func main() {
client, _ := client.NewEnvClient()
cwd, _ := os.Getwd()
ctx, err := os.Open(cwd+"/Dockerfile.tar.gz")
if err != nil {
fmt.Println(err)
return
}
build, err := client.ImageBuild(context.Background(), ctx, types.ImageBuildOptions{Tags: []string{"leadis_image"}, Context: ctx, SuppressOutput: false})
if err != nil {
fmt.Println(err)
return
}
b, _ := ioutil.ReadAll(build.Body)
fmt.Println(string(b))
_, err = client.ContainerCreate(context.Background(), initConfig(), nil, nil, "")
if err != nil {
fmt.Println(err)
}
}
Same dockerfile, but I still get the same error:
error during connect: Post
https://%2Fvar%2Frun%2Fdocker.sock/v1.23/containers/create: http:
server gave HTTP response to HTTPS client

Answer 1

client.NewEnvClient()
Last time I tried, this API expects environment variables like DOCKER_HOST in a different syntax from than the normal docker client.
From the client.go:
// NewEnvClient initializes a new API client based on environment variables.
// Use DOCKER_HOST to set the url to the docker server.
// Use DOCKER_API_VERSION to set the version of the API to reach, leave empty for latest.
// Use DOCKER_CERT_PATH to load the TLS certificates from.
// Use DOCKER_TLS_VERIFY to enable or disable TLS verification, off by default.
To use this, you need DOCKER_HOST to be set/exported in one of these formats:
unix:///var/run/docker.sock
http://localhost:2375
https://localhost:2376