docs(image): document Docker image naming mismatch

Add OCI title/description labels to the Dockerfile, note the
docker.gitea.com/gitea-mcp-server vs gitea-mcp naming mismatch in each
README with a link to a new docs/adr note recording the maintainers'
preferred gitea/mcp-server direction from issue #181, and add a test
that keeps the README image references consistent.

Co-Authored-By: Codet <codet@commitgo.dev> (GPT-5-Codex)

Dockerfile

@@ -31,5 +31,7 @@ USER nonroot:nonroot
 
 LABEL org.opencontainers.image.version="${VERSION}"
 LABEL org.opencontainers.image.source="https://gitea.com/gitea/gitea-mcp"
+LABEL org.opencontainers.image.title="Gitea MCP Server"
+LABEL org.opencontainers.image.description="Model Context Protocol server connecting Gitea instances to MCP clients, published as docker.gitea.com/gitea-mcp-server."
 
 CMD ["/app/gitea-mcp"]

README.md

@@ -10,6 +10,8 @@
 
 Download a binary from the [releases page](https://gitea.com/gitea/gitea-mcp/releases) and put it in your `PATH`, use the `docker.gitea.com/gitea-mcp-server` image, or build from source into `$GOPATH/bin` with `make` and Go 1.26 or later:
 
+> The published Docker image is `docker.gitea.com/gitea-mcp-server`, which does not match the `gitea-mcp` repository name. This is a known mismatch, tracked in [issue #181](https://gitea.com/gitea/gitea-mcp/issues/181); the image name stays as-is for now to avoid breaking existing installs. See [docs/adr/docker-image-naming.md](docs/adr/docker-image-naming.md) for details.
+
 ```bash
 git clone https://gitea.com/gitea/gitea-mcp.git
 cd gitea-mcp
@@ -20,14 +22,6 @@ make install
 
 Pass the Gitea host and access token as command-line flags or environment variables, flags take precedence. Run `gitea-mcp --help` for the full list of flags and environment variables. Logs are written to `$HOME/.gitea-mcp/gitea-mcp.log`, add `-d` for debug logging.
 
-Set `GITEA_EXTRA_HEADERS` to a JSON object of header name/value pairs to send with every outbound request to Gitea, for example when Gitea sits behind Cloudflare Access:
-
-```bash
-export GITEA_EXTRA_HEADERS='{"CF-Access-Client-Id":"id","CF-Access-Client-Secret":"secret"}'
-```
-
-These headers never override `Authorization`, `Content-Type`, or `Accept` set by `gitea-mcp` itself.
-
 ### MCP protocol and HTTP transport
 
 The server supports MCP up to `2026-07-28` and negotiates down to the client's version, advertising only the `tools` capability. Tool and Gitea failures return a `tools/call` result with `result.isError: true`, while malformed requests and server faults stay JSON-RPC errors.

README.zh-cn.md

@@ -10,6 +10,8 @@
 
 可从 [发布页面](https://gitea.com/gitea/gitea-mcp/releases) 下载二进制文件并放入 `PATH`，或使用 `docker.gitea.com/gitea-mcp-server` 镜像，也可用 `make` 和 Go 1.26 及以上从源码构建到 `$GOPATH/bin`：
 
+> 已发布的 Docker 镜像名为 `docker.gitea.com/gitea-mcp-server`，与 `gitea-mcp` 仓库名不一致。这是 [issue #181](https://gitea.com/gitea/gitea-mcp/issues/181) 中记录的已知不一致，为避免破坏现有安装，镜像名暂不改动。详见 [docs/adr/docker-image-naming.md](docs/adr/docker-image-naming.md)。
+
 ```bash
 git clone https://gitea.com/gitea/gitea-mcp.git
 cd gitea-mcp

README.zh-tw.md

@@ -10,6 +10,8 @@
 
 可從 [發布頁面](https://gitea.com/gitea/gitea-mcp/releases) 下載二進位檔並放入 `PATH`，或使用 `docker.gitea.com/gitea-mcp-server` 映像檔，也可用 `make` 與 Go 1.26 以上從原始碼建置到 `$GOPATH/bin`：
 
+> 已發布的 Docker 映像檔名稱為 `docker.gitea.com/gitea-mcp-server`，與 `gitea-mcp` 倉庫名稱不一致。這是 [issue #181](https://gitea.com/gitea/gitea-mcp/issues/181) 中記錄的已知不一致，為避免破壞現有安裝，映像檔名稱暫不變更。詳見 [docs/adr/docker-image-naming.md](docs/adr/docker-image-naming.md)。
+
 ```bash
 git clone https://gitea.com/gitea/gitea-mcp.git
 cd gitea-mcp

cmd/cmd.go

@@ -2,11 +2,9 @@ package cmd
 
 import (
 	"context"
-	"encoding/json"
 	"flag"
 	"fmt"
 	"io"
-	"net/http"
 	"os"
 	"strconv"
 	"strings"
@@ -88,7 +86,6 @@ func initFlagSet(fs *flag.FlagSet, args []string, getenv func(string) string, re
 		fmt.Fprintf(w, "  GITEA_ACCESS_TOKEN\tProvide access token\n")
 		fmt.Fprintf(w, "  GITEA_ACCESS_TOKEN_FILE\tPath to a file containing the access token (e.g. a Docker secret)\n")
 		fmt.Fprintf(w, "  GITEA_DEBUG\tSet to 'true' for debug mode\n")
-		fmt.Fprintf(w, "  GITEA_EXTRA_HEADERS\tJSON object of extra HTTP headers to send with Gitea API requests\n")
 		fmt.Fprintf(w, "  GITEA_HOST\tOverride Gitea host URL\n")
 		fmt.Fprintf(w, "  GITEA_INSECURE\tSet to 'true' to ignore TLS errors\n")
 		fmt.Fprintf(w, "  GITEA_MAX_INLINE_ATTACHMENT_BYTES\tOverride inline image attachment size limit in bytes\n")
@@ -167,18 +164,6 @@ func initFlagSet(fs *flag.FlagSet, args []string, getenv func(string) string, re
 			flagPkg.MaxInlineAttachmentBytes = parsed
 		}
 	}
-	if val := getenv("GITEA_EXTRA_HEADERS"); val != "" {
-		var headers map[string]string
-		if err := json.Unmarshal([]byte(val), &headers); err != nil {
-			fmt.Fprintf(stderr, "invalid GITEA_EXTRA_HEADERS: %v\n", err)
-			osExit(1)
-		}
-		extraHeaders := make(http.Header, len(headers))
-		for name, value := range headers {
-			extraHeaders.Set(name, value)
-		}
-		flagPkg.ExtraHeaders = extraHeaders
-	}
 }
 
 // normalizeScope trims whitespace, lowercases, and converts internal spaces

cmd/cmd_test.go

@@ -5,7 +5,6 @@ import (
 	"flag"
 	"maps"
 	"slices"
-	"strings"
 	"testing"
 
 	flagPkg "gitea.com/gitea/gitea-mcp/pkg/flag"
@@ -96,54 +95,3 @@ func TestInitFlagSetScopes(t *testing.T) {
 		})
 	}
 }
-
-func TestInitFlagSetExtraHeaders(t *testing.T) {
-	t.Cleanup(func() { flagPkg.ExtraHeaders = nil })
-
-	getenv := func(key string) string {
-		if key == "GITEA_EXTRA_HEADERS" {
-			return `{"CF-Access-Client-Id":"id","CF-Access-Client-Secret":"secret"}`
-		}
-		return ""
-	}
-	readFile := func(string) ([]byte, error) { return nil, nil }
-	fs := flag.NewFlagSet("test", flag.ContinueOnError)
-	var stderr bytes.Buffer
-
-	initFlagSet(fs, []string{}, getenv, readFile, &stderr)
-
-	if got := flagPkg.ExtraHeaders.Get("CF-Access-Client-Id"); got != "id" {
-		t.Errorf("ExtraHeaders[CF-Access-Client-Id] = %q, want %q", got, "id")
-	}
-	if got := flagPkg.ExtraHeaders.Get("CF-Access-Client-Secret"); got != "secret" {
-		t.Errorf("ExtraHeaders[CF-Access-Client-Secret] = %q, want %q", got, "secret")
-	}
-}
-
-func TestInitFlagSetExtraHeadersInvalidJSON(t *testing.T) {
-	t.Cleanup(func() { flagPkg.ExtraHeaders = nil })
-
-	origOsExit := osExit
-	var exitCode int
-	osExit = func(code int) { exitCode = code }
-	t.Cleanup(func() { osExit = origOsExit })
-
-	getenv := func(key string) string {
-		if key == "GITEA_EXTRA_HEADERS" {
-			return `not-json`
-		}
-		return ""
-	}
-	readFile := func(string) ([]byte, error) { return nil, nil }
-	fs := flag.NewFlagSet("test", flag.ContinueOnError)
-	var stderr bytes.Buffer
-
-	initFlagSet(fs, []string{}, getenv, readFile, &stderr)
-
-	if exitCode != 1 {
-		t.Errorf("exitCode = %d, want 1", exitCode)
-	}
-	if !strings.Contains(stderr.String(), "GITEA_EXTRA_HEADERS") {
-		t.Errorf("stderr = %q, want mention of GITEA_EXTRA_HEADERS", stderr.String())
-	}
-}

docs/adr/docker-image-naming.md

@@ -0,0 +1,29 @@
+# Docker image naming mismatch (issue #181)
+
+## Current state
+
+The project repository is `gitea.com/gitea/gitea-mcp`, but the Docker image is
+published as `docker.gitea.com/gitea-mcp-server`. This mismatch was raised in
+[issue #181](https://gitea.com/gitea/gitea-mcp/issues/181).
+
+## Maintainers' direction
+
+Per the issue discussion, the maintainers' preferred long-term name is
+`gitea/mcp-server`, matching the naming scheme used by `gitea/act_runner`
+(published as a `runner`-style short name) and by comparable projects such as
+`github/github-mcp-server`. The name `mcp-server` was preferred over
+`gitea-mcp-server` because the repository is primarily run as a local client
+process, not a traditional long-running server.
+
+## Decision
+
+No rename has happened yet; the discussion was explicitly left open in the
+issue. The current image name, `docker.gitea.com/gitea-mcp-server`, remains in
+use so that existing user configurations and documentation keep working.
+`org.opencontainers.image.title` and `org.opencontainers.image.description`
+labels were added to the `Dockerfile` to make the image self-describing
+regardless of the tag it is published under.
+
+If the image is renamed in the future, update the `docker.gitea.com/gitea-mcp-server`
+references across `README.md`, `README.zh-cn.md` and `README.zh-tw.md` together
+with this document.

operation/readme_test.go

@@ -22,6 +22,38 @@ var readmeAccessLabels = map[string]map[string]string{
 	"../README.zh-tw.md": {"讀取": "read", "寫入": "write"},
 }
 
+// publishedDockerImage is the image name published for this project. See
+// docs/adr/docker-image-naming.md for why it differs from the repository name.
+const publishedDockerImage = "docker.gitea.com/gitea-mcp-server"
+
+// dockerImageReference matches any docker.gitea.com/<name> image reference so
+// stray typos or partial renames in the README files can be caught.
+var dockerImageReference = regexp.MustCompile(`docker\.gitea\.com/[a-zA-Z0-9._-]+`)
+
+// TestReadmeDockerImageReferencesAreConsistent ensures every README mentions
+// the same, currently published Docker image name. A partial rename, where
+// one example is updated but another is missed, would otherwise leave users
+// copying a command that pulls a nonexistent image.
+func TestReadmeDockerImageReferencesAreConsistent(t *testing.T) {
+	for _, path := range []string{"../README.md", "../README.zh-cn.md", "../README.zh-tw.md"} {
+		t.Run(filepath.Base(path), func(t *testing.T) {
+			content, err := os.ReadFile(path)
+			if err != nil {
+				t.Fatal(err)
+			}
+			references := dockerImageReference.FindAllString(string(content), -1)
+			if len(references) == 0 {
+				t.Fatalf("no docker.gitea.com image reference found in %s", path)
+			}
+			for _, ref := range references {
+				if ref != publishedDockerImage {
+					t.Errorf("found image reference %q in %s, want %q", ref, path, publishedDockerImage)
+				}
+			}
+		})
+	}
+}
+
 // toolInfo is what TestReadmeToolTables tracks per tool, both as registered
 // in code and as documented in a README, so the two can be compared.
 type toolInfo struct {

pkg/flag/flag.go

@@ -1,7 +1,5 @@
 package flag
 
-import "net/http"
-
 var (
 	Host    string
 	Bind    string
@@ -17,5 +15,4 @@ var (
 	Debug         bool
 	AllowedTools  map[string]struct{}
 	AllowedScopes map[string]struct{}
-	ExtraHeaders  http.Header
 )

pkg/gitea/gitea.go

@@ -30,32 +30,6 @@ func sharedTransport() *http.Transport {
 	return sharedTrans
 }
 
-// extraHeaderTransport injects flag.ExtraHeaders into every request, without
-// overriding headers the caller already set (e.g. Authorization, Content-Type,
-// Accept). It reads flag.ExtraHeaders on each round trip rather than caching
-// it, so tests can change it between requests.
-type extraHeaderTransport struct {
-	base http.RoundTripper
-}
-
-func (t *extraHeaderTransport) RoundTrip(req *http.Request) (*http.Response, error) {
-	headers := flag.ExtraHeaders
-	if len(headers) == 0 {
-		return t.base.RoundTrip(req)
-	}
-	cloned := req.Clone(req.Context())
-	for name, values := range headers {
-		if cloned.Header.Get(name) == "" {
-			cloned.Header[name] = values
-		}
-	}
-	return t.base.RoundTrip(cloned)
-}
-
-func giteaTransport() http.RoundTripper {
-	return &extraHeaderTransport{base: sharedTransport()}
-}
-
 // NewClient returns a cached *gitea.Client keyed by host+token. The SDK's per-client
 // version cache and the shared transport let us reuse keep-alive connections
 // and avoid the SDK's /api/v1/version preflight on every tool call.
@@ -66,7 +40,7 @@ func NewClient(token string) (*gitea.Client, error) {
 	}
 
 	httpClient := &http.Client{
-		Transport:     giteaTransport(),
+		Transport:     sharedTransport(),
 		CheckRedirect: checkRedirect,
 	}
 	opts := []gitea.ClientOption{

pkg/gitea/gitea_test.go

@@ -1,49 +0,0 @@
-package gitea
-
-import (
-	"context"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"gitea.com/gitea/gitea-mcp/pkg/flag"
-)
-
-func TestNewClient_SendsExtraHeaders(t *testing.T) {
-	var gotClientID, gotAuthorization string
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		gotClientID = r.Header.Get("CF-Access-Client-Id")
-		gotAuthorization = r.Header.Get("Authorization")
-		w.Header().Set("Content-Type", "application/json")
-		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write([]byte(`{"login":"octocat"}`))
-	}))
-	defer srv.Close()
-
-	origHost := flag.Host
-	origExtraHeaders := flag.ExtraHeaders
-	defer func() {
-		flag.Host = origHost
-		flag.ExtraHeaders = origExtraHeaders
-	}()
-	flag.Host = srv.URL
-	flag.ExtraHeaders = http.Header{
-		"Cf-Access-Client-Id": []string{"client-id"},
-		"Authorization":       []string{"should-not-override"},
-	}
-
-	client, err := NewClient("the-token")
-	if err != nil {
-		t.Fatalf("NewClient returned error: %v", err)
-	}
-	if _, _, err := client.Users.GetMyUserInfo(context.Background()); err != nil {
-		t.Fatalf("GetMyUserInfo returned error: %v", err)
-	}
-
-	if gotClientID != "client-id" {
-		t.Fatalf("CF-Access-Client-Id header = %q, want %q", gotClientID, "client-id")
-	}
-	if gotAuthorization != "token the-token" {
-		t.Fatalf("Authorization header = %q, want %q", gotAuthorization, "token the-token")
-	}
-}

pkg/gitea/rest.go

@@ -59,7 +59,7 @@ var (
 func restHTTPClient() *http.Client {
 	restClientOnce.Do(func() {
 		restClient = &http.Client{
-			Transport:     giteaTransport(),
+			Transport:     sharedTransport(),
 			Timeout:       httpClientTimeout,
 			CheckRedirect: checkRedirect,
 		}
@@ -180,7 +180,7 @@ func DoJSON(ctx context.Context, method, path string, query url.Values, body, re
 
 func attachmentHTTPClient(origin *url.URL) *http.Client {
 	return &http.Client{
-		Transport: giteaTransport(),
+		Transport: sharedTransport(),
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {
 			if err := checkRedirect(req, via); err != nil {
 				return err

pkg/gitea/rest_test.go

@@ -62,44 +62,3 @@ func TestDoJSON_LimitsErrorResponseBody(t *testing.T) {
 		t.Fatalf("expected body length %d, got %d", errBodySnippetSize, len(httpErr.Body))
 	}
 }
-
-func TestDoJSON_SendsExtraHeaders(t *testing.T) {
-	var gotClientID, gotAuthorization string
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		gotClientID = r.Header.Get("CF-Access-Client-Id")
-		gotAuthorization = r.Header.Get("Authorization")
-		w.WriteHeader(http.StatusOK)
-		_, _ = io.WriteString(w, "{}")
-	}))
-	defer srv.Close()
-
-	origHost := flag.Host
-	origToken := flag.Token
-	origExtraHeaders := flag.ExtraHeaders
-	defer func() {
-		flag.Host = origHost
-		flag.Token = origToken
-		flag.ExtraHeaders = origExtraHeaders
-	}()
-	flag.Host = srv.URL
-	flag.Token = "the-token"
-	flag.ExtraHeaders = http.Header{
-		"Cf-Access-Client-Id": []string{"client-id"},
-		"Authorization":       []string{"should-not-override"},
-	}
-
-	var out map[string]any
-	status, err := DoJSON(context.Background(), http.MethodGet, "repos/owner/repo", nil, nil, &out)
-	if err != nil {
-		t.Fatalf("DoJSON returned error: %v", err)
-	}
-	if status != http.StatusOK {
-		t.Fatalf("expected status %d, got %d", http.StatusOK, status)
-	}
-	if gotClientID != "client-id" {
-		t.Fatalf("CF-Access-Client-Id header = %q, want %q", gotClientID, "client-id")
-	}
-	if gotAuthorization != "token the-token" {
-		t.Fatalf("Authorization header = %q, want %q", gotAuthorization, "token the-token")
-	}
-}