fix: Allow to use the COMPOSE_FILE variable in finch compose

Add a process to convert the path of the file specified in the
COMPOSE_FILE variable to WSL path in Windows environment.

Signed-off-by: Hayato Kiwata <[email protected]>

cmd/finch/nerdctl.go

@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"path/filepath"
+	"runtime"
 	"strings"
 
 	"golang.org/x/exp/slices"
@@ -240,9 +241,17 @@ func (nc *nerdctlCommand) run(cmdName string, args []string) error {
 	var passedEnvArgs []string
 	for _, e := range passedEnvs {
 		v, b := nc.systemDeps.LookupEnv(e)
-		if b {
-			passedEnvArgs = append(passedEnvArgs, fmt.Sprintf("%s=%s", e, v))
+		if !b {
+			continue
+		}
+		if runtime.GOOS == "windows" && e == "COMPOSE_FILE" {
+			wslPath, err := convertToWSLPath(nc.systemDeps, v)
+			if err != nil {
+				return err
+			}
+			v = wslPath
 		}
+		passedEnvArgs = append(passedEnvArgs, fmt.Sprintf("%s=%s", e, v))
 	}
 
 	var additionalEnv []string

cmd/finch/nerdctl_darwin.go

@@ -16,6 +16,10 @@ import (
 	"github.com/runfinch/finch/pkg/flog"
 )
 
+func convertToWSLPath(_ NerdctlCommandSystemDeps, _ string) (string, error) {
+	return "", nil
+}
+
 var aliasMap = map[string]string{}
 
 var argHandlerMap = map[string]map[string]argHandler{}