refactor: fix add-path / GITHUB_PATH commands (#1472)

* fix: add-path / GITHUB_PATH commands

* Disable old code

* fix: missing mock

* Update tests

* fix tests

* UpdateExtraPath skip on dryrun

* patch test

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

pkg/runner/container_mock_test.go

@@ -2,6 +2,7 @@ package runner
 
 import (
 	"context"
+	"io"
 
 	"github.com/nektos/act/pkg/common"
 	"github.com/nektos/act/pkg/container"
@@ -63,7 +64,17 @@ func (cm *containerMock) CopyDir(destPath string, srcPath string, useGitIgnore b
 	args := cm.Called(destPath, srcPath, useGitIgnore)
 	return args.Get(0).(func(context.Context) error)
 }
+
 func (cm *containerMock) Exec(command []string, env map[string]string, user, workdir string) common.Executor {
 	args := cm.Called(command, env, user, workdir)
 	return args.Get(0).(func(context.Context) error)
 }
+
+func (cm *containerMock) GetContainerArchive(ctx context.Context, srcPath string) (io.ReadCloser, error) {
+	args := cm.Called(ctx, srcPath)
+	err, hasErr := args.Get(1).(error)
+	if !hasErr {
+		err = nil
+	}
+	return args.Get(0).(io.ReadCloser), err
+}