Update local build instructions in README

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

README.md

@@ -19,35 +19,42 @@ You can build the credential helpers using Docker:
 ```shell
 # create builder
 $ docker buildx create --use
+
 # build credential helpers from remote repository and output to ./bin/build
 $ docker buildx bake "https://github.com/docker/docker-credential-helpers.git"
+
 # or from local source
 $ git clone https://github.com/docker/docker-credential-helpers.git
+$ cd docker-credential-helpers
 $ docker buildx bake
 ```
 
 Or if the toolchain is already installed on your machine:
 
 1 - Download the source and put it in your `$GOPATH` with `go get`.
 
-```
-$ go get github.com/docker/docker-credential-helpers
+```shell
+$ git clone github.com/docker/docker-credential-helpers
+$ cd docker-credential-helpers
 ```
 
 2 - Use `make` to build the program you want. That will leave an executable in the `bin` directory inside the repository.
 
-```
-$ cd $GOPATH/docker/docker-credentials-helpers
+```shell
 $ make osxkeychain
 ```
 
 3 - Put that binary in your `$PATH`, so Docker can find it.
 
+```shell
+$ cp bin/docker-credential-osxkeychain /usr/local/bin/
+```
+
 ## Usage
 
 ### With the Docker Engine
 
-Set the `credsStore` option in your `.docker/config.json` file with the suffix of the program you want to use. For instance, set it to `osxkeychain` if you want to use `docker-credential-osxkeychain`.
+Set the `credsStore` option in your `~/.docker/config.json` file with the suffix of the program you want to use. For instance, set it to `osxkeychain` if you want to use `docker-credential-osxkeychain`.
 
 ```json
 {
@@ -91,8 +98,8 @@ A credential helper can be any program that can read values from the standard in
 
 This repository also includes libraries to implement new credentials programs in Go. Adding a new helper program is pretty easy. You can see how the OS X keychain helper works in the [osxkeychain](osxkeychain) directory.
 
-1. Implement the interface `credentials.Helper` in `YOUR_PACKAGE/YOUR_PACKAGE_$GOOS.go`
-2. Create a main program in `YOUR_PACKAGE/cmd/main_$GOOS.go`.
+1. Implement the interface `credentials.Helper` in `YOUR_PACKAGE/`
+2. Create a main program in `YOUR_PACKAGE/cmd/`.
 3. Add make tasks to build your program and run tests.
 
 ## License