feat: add build command + build,images config

cli/build.go

@@ -0,0 +1,31 @@
+package cli
+
+import (
+	"github.com/spf13/cobra"
+	"log"
+	podman "spud/podman"
+	service_definition "spud/service_definition"
+)
+
+var build = &cobra.Command{
+	Use:   "build",
+	Short: "Build service images.",
+	Run: func(cmd *cobra.Command, args []string) {
+		pathProvided := args[0]
+		def, err := service_definition.GetServiceDefinitionFromFile(pathProvided)
+
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		imagesToBuild := def.Build.Images
+
+		if len(imagesToBuild) == 0 {
+			log.Print("No images defined - nothing to build!")
+		}
+
+		for _, imageDef := range imagesToBuild {
+			podman.Build(imageDef)
+		}
+	},
+}

cli/cli.go

@@ -10,6 +10,8 @@ var allCommands = []*cobra.Command{
 	start,
 	// cli/stop_service.go
 	stop,
+	// cli/build.go
+	build,
 }
 
 // Creates the root of the CLI, with all available commands

podman/main.go

@@ -3,8 +3,8 @@ package podman
 
 import (
 	"log"
+	"os"
 	"os/exec"
-
 	service_definition "spud/service_definition"
 )
 
@@ -141,3 +141,19 @@ func CreateContainer(definition service_definition.ContainerDefinition, knownVol
 
 	return nil
 }
+
+// Builds a container image.
+func Build(imageDefinition service_definition.BuildImage) error {
+	args := []string{"build", "-f", imageDefinition.Path, "-t", imageDefinition.TagPrefix}
+
+	command := exec.Command("podman", args...)
+
+	command.Stdout = os.Stdout
+	command.Stderr = os.Stderr
+
+	if err := command.Run(); err != nil {
+		return err
+	}
+
+	return nil
+}

service_definition/main.go

@@ -6,6 +6,15 @@ import (
 	"github.com/goccy/go-yaml"
 )
 
+type BuildImage struct {
+	Path      string `yaml:"path"`
+	TagPrefix string `yaml:"tag"`
+}
+
+type BuildConfiguration struct {
+	Images []BuildImage
+}
+
 type VolumeDefinition struct {
 	Name string `yaml:"name"`
 }
@@ -33,6 +42,7 @@ type ContainerDefinition struct {
 
 type ServiceDefinition struct {
 	Name       string                `yaml:"name"`
+	Build      BuildConfiguration    `yaml:"build"`
 	Volumes    []VolumeDefinition    `yaml:"volumes"`
 	Containers []ContainerDefinition `yaml:"containers"`
 	Ports      []PortMapping         `yaml:"ports"`