rc2

Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # Build Go binary
-FROM golang:1.25-alpine AS builder
+FROM golang:1.22-alpine AS builder
 WORKDIR /src
 RUN apk add --no-cache ca-certificates tzdata
 COPY go.mod ./
@@ -13,7 +13,7 @@ RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/ntfywui ./cmd/ntfy
 FROM binwiederhier/ntfy:latest AS ntfy
 
 # Runtime
-FROM alpine:3.23
+FROM alpine:3.20
 RUN apk add --no-cache ca-certificates tzdata \
   && addgroup -S ntfywui && adduser -S -G ntfywui -h /home/ntfywui ntfywui
 WORKDIR /app

internal/ntfy/ntfy.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"os"
 	"os/exec"
 	"regexp"
 	"strings"
@@ -45,16 +46,25 @@ func (c *Client) Run(ctx context.Context, args []string, env map[string]string,
 	if c.Bin == "" {
 		return "", "", 0, errors.New("ntfy binary not set")
 	}
+
+	// Many (newer) ntfy versions support `--config/-c` for server-side commands
+	// (serve/user/access/token). Some older builds do not. We try with --config
+	// first (if configured) and fall back to running without it if the binary
+	// rejects the flag.
+	withConfig := args
 	if c.Config != "" {
-		args = append([]string{"--config", c.Config}, args...)
+		withConfig = append([]string{"--config", c.Config}, args...)
 	}
+
 	tctx := ctx
 	var cancel context.CancelFunc
 	if c.Timeout > 0 {
 		tctx, cancel = context.WithTimeout(ctx, c.Timeout)
 		defer cancel()
 	}
-	cmd := exec.CommandContext(tctx, c.Bin, args...)
+	// helper to execute once
+	runOnce := func(a []string) (string, string, int, error) {
+		cmd := exec.CommandContext(tctx, c.Bin, a...)
 		if stdin != "" {
 			cmd.Stdin = strings.NewReader(stdin)
 		}
@@ -62,7 +72,8 @@ func (c *Client) Run(ctx context.Context, args []string, env map[string]string,
 		cmd.Stdout = &outb
 		cmd.Stderr = &errb
 		if env != nil {
-		// inherit env automatically
+			// inherit env + add/override provided vars
+			cmd.Env = append([]string{}, os.Environ()...)
 			for k, v := range env {
 				cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%s", k, v))
 			}
@@ -80,6 +91,22 @@ func (c *Client) Run(ctx context.Context, args []string, env map[string]string,
 			}
 		}
 		return outb.String(), errb.String(), exit, nil
+	}
+
+	// first attempt (maybe with --config)
+	out, errOut, exit, err := runOnce(withConfig)
+	if c.Config == "" {
+		return out, errOut, exit, err
+	}
+	// fallback for older ntfy binaries that don't know --config
+	if exit != 0 {
+		errTrim := strings.TrimSpace(errOut)
+		if strings.Contains(errTrim, "flag provided but not defined: -config") ||
+			strings.Contains(errTrim, "unknown flag") && strings.Contains(errTrim, "config") {
+			return runOnce(args)
+		}
+	}
+	return out, errOut, exit, err
 }
 
 func (c *Client) ListUsers(ctx context.Context) ([]User, error) {