vm: add support for provision scripts (abiosoft#386)

* vm: add support for provision scripts in config

cmd/clone.go

@@ -94,5 +94,6 @@ var cloneCmd = &cobra.Command{
 
 func init() {
  root.Cmd().AddCommand(cloneCmd)
+ cloneCmd.Hidden = true
 
 }

cmd/start.go

@@ -207,6 +207,8 @@ func prepareConfig(cmd *cobra.Command) {
 
  // docker can only be set in config file
  startCmdArgs.Docker = current.Docker
+ // provision scripts can only be set in config file
+ startCmdArgs.Provision = current.Provision
 
  // use current settings for unchanged configs
  // otherwise may be reverted to their default values.

config/config.go

@@ -93,6 +93,9 @@ type Config struct {
 
  // layer
  Layer bool `yaml:"layer,omitempty"`
+
+ // provision scripts
+ Provision []Provision `yaml:"provision,omitempty"`
 }
 
 // Kubernetes is kubernetes configuration
@@ -115,6 +118,11 @@ type Mount struct {
  Writable bool `yaml:"writable"`
 }
 
+type Provision struct {
+ Mode string `yaml:"mode"`
+ Script string `yaml:"script"`
+}
+
 func (c Config) MountsOrDefault() []Mount {
  if len(c.Mounts) > 0 {
  return c.Mounts

embedded/defaults/colima.yaml

@@ -108,6 +108,25 @@ cpuType: host
 # Default: false
 layer: false
 
+# Custom provision scripts for the virtual machine.
+# Provisioning scripts are executed on startup and therefore needs to be idempotent.
+#
+# Example - script exected as root
+# provision:
+# - mode: system
+# script: apk add htop vim
+#
+# Example - script exected as user
+# provision:
+# - mode: user
+# script: |
+# [ -f ~/.provision ] && exit 0;
+# echo provisioning as $USER...
+# touch ~/.provision
+#
+# Default: []
+provision: []
+
 # Configure volume mounts for the virtual machine.
 # Colima mounts user's home directory by default to provide a familiar
 # user experience.

environment/vm/lima/yaml.go

@@ -302,6 +302,14 @@ func newConf(ctx context.Context, conf config.Config) (l Config, err error) {
  }
  }
 
+ // provision scripts
+ for _, script := range conf.Provision {
+ l.Provision = append(l.Provision, Provision{
+ Mode: script.Mode,
+ Script: script.Script,
+ })
+ }
+
  return
 }