Add podman-env command

Add subcommand to setup environment variables to use `podman-remote` with
the CRC VM.

Fixes #961.

cmd/crc/cmd/podman_env.go

@@ -0,0 +1,46 @@
+package cmd
+
+import (
+	"github.com/code-ready/crc/pkg/crc/constants"
+	"github.com/code-ready/crc/pkg/crc/errors"
+	"github.com/code-ready/crc/pkg/crc/machine"
+	"github.com/code-ready/crc/pkg/crc/output"
+	"github.com/code-ready/crc/pkg/os/shell"
+	"github.com/spf13/cobra"
+)
+
+var podmanEnvCmd = &cobra.Command{
+	Use:   "podman-env",
+	Short: "Setup podman environment",
+	Long:  `Setup environment for 'podman' binary to access podman on CRC VM`,
+	Run: func(cmd *cobra.Command, args []string) {
+		userShell, err := shell.GetShell(forceShell)
+		if err != nil {
+			errors.ExitWithMessage(1, "Error running the podman-env command: %s", err.Error())
+		}
+
+		ipConfig := machine.IpConfig{
+			Name:  constants.DefaultName,
+			Debug: isDebugLog(),
+		}
+
+		exitIfMachineMissing(ipConfig.Name)
+
+		result, err := machine.Ip(ipConfig)
+		if err != nil {
+			errors.Exit(1)
+		}
+
+		output.Outln(shell.GetPathEnvString(userShell, constants.CrcBinDir))
+		output.Outln(shell.GetEnvString(userShell, "PODMAN_USER", constants.DefaultSSHUser))
+		output.Outln(shell.GetEnvString(userShell, "PODMAN_HOST", result.IP))
+		output.Outln(shell.GetEnvString(userShell, "PODMAN_IDENTITY_FILE", constants.GetPrivateKeyPath()))
+		output.Outln(shell.GetEnvString(userShell, "PODMAN_IGNORE_HOSTS", "1"))
+		output.Outln(shell.GenerateUsageHint(userShell, "crc podman-env"))
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(podmanEnvCmd)
+	podmanEnvCmd.Flags().StringVar(&forceShell, "shell", "", "Set the environment for the specified shell: [fish, cmd, powershell, tcsh, bash, zsh]. Default is auto-detect.")
+}