fix(runner): issues with terragrunt install (#210)

Dockerfile

@@ -78,7 +78,7 @@ RUN addgroup \
 # Copy the binary to the production image from the builder stage
 COPY --from=builder /workspace/bin/burrito /usr/local/bin/burrito
 
-RUN mkdir -p /runner
+RUN mkdir -p /runner/bin
 RUN chmod +x /usr/local/bin/burrito
 RUN chown -R burrito:burrito /runner
 

internal/runner/terragrunt/terragrunt.go

@@ -13,6 +13,10 @@ import (
 	"github.com/padok-team/burrito/internal/runner/terraform"
 )
 
+const (
+	BinWorkDir = "/runner/bin"
+)
+
 type Terragrunt struct {
 	execPath         string
 	planArtifactPath string
@@ -122,7 +126,7 @@ func downloadTerragrunt(version string) (string, error) {
 	}
 	defer response.Body.Close()
 
-	filename := fmt.Sprintf("terragrunt_%s", cpuArch)
+	filename := fmt.Sprintf("%s/terragrunt_%s", BinWorkDir, cpuArch)
 	file, err := os.Create(filename)
 	if err != nil {
 		return "", err