0.2.4 new flag "singlelayer"

core/build.go

@@ -84,12 +84,14 @@ func BuildContainerfile(recipe *Recipe, cmds []ModuleCommand) error {
 	}
 
 	// RUN(S)
-	for _, cmd := range recipe.Runs {
-		_, err = containerfile.WriteString(
-			fmt.Sprintf("RUN %s\n", cmd),
-		)
-		if err != nil {
-			return err
+	if !recipe.SingleLayer {
+		for _, cmd := range recipe.Runs {
+			_, err = containerfile.WriteString(
+				fmt.Sprintf("RUN %s\n", cmd),
+			)
+			if err != nil {
+				return err
+			}
 		}
 	}
 
@@ -106,10 +108,39 @@ func BuildContainerfile(recipe *Recipe, cmds []ModuleCommand) error {
 	}
 
 	// MODULES RUN(S)
-	for _, cmd := range cmds {
-		_, err = containerfile.WriteString(
-			fmt.Sprintf("RUN %s\n", cmd.Command),
-		)
+	if !recipe.SingleLayer {
+		for _, cmd := range cmds {
+			_, err = containerfile.WriteString(
+				fmt.Sprintf("RUN %s\n", cmd.Command),
+			)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	// SINGLE LAYER
+	if recipe.SingleLayer {
+		unifiedCmd := "RUN "
+		for i, cmd := range recipe.Runs {
+			unifiedCmd += cmd
+			if i != len(recipe.Runs)-1 {
+				unifiedCmd += " && "
+			}
+		}
+
+		if len(cmds) > 0 {
+			unifiedCmd += " && "
+		}
+
+		for i, cmd := range cmds {
+			unifiedCmd += cmd.Command
+			if i != len(cmds)-1 {
+				unifiedCmd += " && "
+			}
+		}
+
+		_, err = containerfile.WriteString(unifiedCmd)
 		if err != nil {
 			return err
 		}

core/structs.go

@@ -4,6 +4,7 @@ type Recipe struct {
 	Base          string `json:"base"`
 	Name          string
 	Id            string
+	SingleLayer   bool              `json:"singlelayer"`
 	Labels        map[string]string `json:"labels"`
 	Args          map[string]string `json:"args"`
 	Runs          []string          `json:"runs"`

example/example.yml

@@ -1,6 +1,7 @@
 base: debian:sid-slim
 name: Vib Example
 id: vib-example
+singlelayer: true
 labels:
   maintainer: Vanilla OS Contributors
 args:
@@ -11,7 +12,7 @@ runs:
 modules:
 - name: abroot-git
   type: go
-  buildVars:
+  buildvars:
     GO_OUTPUT_BIN: "/usr/local/bin/abroot"
   source:
     url: https://github.com/vanilla-os/abroot.git

main.go

@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	Version = "0.2.3"
+	Version = "0.2.4"
 )
 
 func main() {