Disabling color through environment variables (#598)

* This patch adds support for disabling color through environment variables.
- NO_COLOR: https://no-color.org/
- CLICOLOR,CLICOLOR_FORCE: https://bixense.com/clicolors/ ( [logrus built-in](6699a89a23/text_formatter.go (L46)) )

* use viper/cobra and add documentation. (https://github.com/containrrr/watchtower/pull/598#pullrequestreview-463814669)

Co-authored-by: Simon Aronsson <simme@arcticbit.se>
pull/626/head^2
bugficks 4 years ago committed by GitHub
parent 9bd3913a11
commit 158b6935d4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23

@ -63,6 +63,17 @@ func Execute() {
func PreRun(cmd *cobra.Command, args []string) {
f := cmd.PersistentFlags()
if enabled, _ := f.GetBool("no-color"); enabled {
log.SetFormatter(&log.TextFormatter{
DisableColors: true,
})
} else {
// enable logrus built-in support for https://bixense.com/clicolors/
log.SetFormatter(&log.TextFormatter{
EnvironmentOverrideColors: true,
})
}
if enabled, _ := f.GetBool("debug"); enabled {
log.SetLevel(log.DebugLevel)
}

@ -88,6 +88,16 @@ Environment Variable: WATCHTOWER_TRACE
Default: false
```
## ANSI colors
Disable ANSI color escape codes in log output.
```
Argument: --no-color
Environment Variable: NO_COLOR
Type: Boolean
Default: false
```
## Docker host
Docker daemon socket to connect to. Can be pointed at a remote Docker host by specifying a TCP endpoint as "tcp://hostname:port".

@ -140,7 +140,12 @@ func RegisterSystemFlags(rootCmd *cobra.Command) {
"",
viper.GetString("WATCHTOWER_HTTP_API_TOKEN"),
"Sets an authentication token to HTTP API requests.")
// https://no-color.org/
flags.BoolP(
"no-color",
"",
viper.IsSet("NO_COLOR"),
"Disable ANSI color escape codes in log output")
flags.StringP(
"scope",
"",

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