[BRANDING] parse FORGEJO__* in the container environment

(cherry picked from commit b0759917479ee17ccb11773176dbc8a75323c5cb)
(cherry picked from commit ac8503150a9a338ccaadf5b690adcdc600a2bf38)

contrib/environment-to-ini/environment-to-ini.go

@@ -16,15 +16,15 @@ func main() {
 	app := cli.NewApp()
 	app.Name = "environment-to-ini"
 	app.Usage = "Use provided environment to update configuration ini"
-	app.Description = `As a helper to allow docker users to update the gitea configuration
+	app.Description = `As a helper to allow docker users to update the forgejo configuration
 	through the environment, this command allows environment variables to
 	be mapped to values in the ini.
 
-	Environment variables of the form "GITEA__SECTION_NAME__KEY_NAME"
+	Environment variables of the form "FORGEJO__SECTION_NAME__KEY_NAME"
 	will be mapped to the ini section "[section_name]" and the key
 	"KEY_NAME" with the value as provided.
 
-	Environment variables of the form "GITEA__SECTION_NAME__KEY_NAME__FILE"
+	Environment variables of the form "FORGEJO__SECTION_NAME__KEY_NAME__FILE"
 	will be mapped to the ini section "[section_name]" and the key
 	"KEY_NAME" with the value loaded from the specified file.
 
@@ -42,8 +42,8 @@ func main() {
 		...
 		"""
 
-	You would set the environment variables: "GITEA__LOG_0x2E_CONSOLE__COLORIZE=false"
-	and "GITEA__LOG_0x2E_CONSOLE__STDERR=false". Other examples can be found
+	You would set the environment variables: "FORGEJO__LOG_0x2E_CONSOLE__COLORIZE=false"
+	and "FORGEJO__LOG_0x2E_CONSOLE__STDERR=false". Other examples can be found
 	on the configuration cheat sheet.`
 	app.Flags = []cli.Flag{
 		cli.StringFlag{
@@ -59,7 +59,7 @@ func main() {
 		cli.StringFlag{
 			Name:  "work-path, w",
 			Value: setting.AppWorkPath,
-			Usage: "Set the gitea working path",
+			Usage: "Set the forgejo working path",
 		},
 		cli.StringFlag{
 			Name:  "out, o",

modules/setting/config_env.go

@@ -13,7 +13,7 @@ import (
 )
 
 const (
-	EnvConfigKeyPrefixGitea = "GITEA__"
+	EnvConfigKeyPrefixGitea = "^(FORGEJO|GITEA)__"
 	EnvConfigKeySuffixFile  = "__FILE"
 )
 
@@ -96,19 +96,21 @@ func decodeEnvSectionKey(encoded string) (ok bool, section, key string) {
 
 // decodeEnvironmentKey decode the environment key to section and key
 // The environment key is in the form of GITEA__SECTION__KEY or GITEA__SECTION__KEY__FILE
-func decodeEnvironmentKey(prefixGitea, suffixFile, envKey string) (ok bool, section, key string, useFileValue bool) {
-	if !strings.HasPrefix(envKey, prefixGitea) {
-		return false, "", "", false
-	}
+func decodeEnvironmentKey(prefixRegexp *regexp.Regexp, suffixFile, envKey string) (ok bool, section, key string, useFileValue bool) {
 	if strings.HasSuffix(envKey, suffixFile) {
 		useFileValue = true
 		envKey = envKey[:len(envKey)-len(suffixFile)]
 	}
-	ok, section, key = decodeEnvSectionKey(envKey[len(prefixGitea):])
+	loc := prefixRegexp.FindStringIndex(envKey)
+	if loc == nil {
+		return false, "", "", false
+	}
+	ok, section, key = decodeEnvSectionKey(envKey[loc[1]:])
 	return ok, section, key, useFileValue
 }
 
 func EnvironmentToConfig(cfg ConfigProvider, envs []string) (changed bool) {
+	prefixRegexp := regexp.MustCompile(EnvConfigKeyPrefixGitea)
 	for _, kv := range envs {
 		idx := strings.IndexByte(kv, '=')
 		if idx < 0 {
@@ -118,7 +120,7 @@ func EnvironmentToConfig(cfg ConfigProvider, envs []string) (changed bool) {
 		// parse the environment variable to config section name and key name
 		envKey := kv[:idx]
 		envValue := kv[idx+1:]
-		ok, sectionName, keyName, useFileValue := decodeEnvironmentKey(EnvConfigKeyPrefixGitea, EnvConfigKeySuffixFile, envKey)
+		ok, sectionName, keyName, useFileValue := decodeEnvironmentKey(prefixRegexp, EnvConfigKeySuffixFile, envKey)
 		if !ok {
 			continue
 		}

modules/setting/config_env_test.go

@@ -5,6 +5,7 @@ package setting
 
 import (
 	"os"
+	"regexp"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -33,7 +34,7 @@ func TestDecodeEnvSectionKey(t *testing.T) {
 }
 
 func TestDecodeEnvironmentKey(t *testing.T) {
-	prefix := "GITEA__"
+	prefix := regexp.MustCompile(EnvConfigKeyPrefixGitea)
 	suffix := "__FILE"
 
 	ok, section, key, file := decodeEnvironmentKey(prefix, suffix, "SEC__KEY")
@@ -54,6 +55,12 @@ func TestDecodeEnvironmentKey(t *testing.T) {
 	assert.Equal(t, "KEY", key)
 	assert.False(t, file)
 
+	ok, section, key, file = decodeEnvironmentKey(prefix, suffix, "FORGEJO__SEC__KEY")
+	assert.True(t, ok)
+	assert.Equal(t, "sec", section)
+	assert.Equal(t, "KEY", key)
+	assert.False(t, file)
+
 	// with "__FILE" suffix, it doesn't support to write "[sec].FILE" to config (no such key FILE is used in Gitea)
 	// but it could be fixed in the future by adding a new suffix like "__VALUE" (no such key VALUE is used in Gitea either)
 	ok, section, key, file = decodeEnvironmentKey(prefix, suffix, "GITEA__SEC__FILE")