Add make publish: build the image on the Docker host and push it to the registry

`script/publish` runs `script/docker` against the Docker host and pushes the image to the registry under four tags: the UTC date, the short commit hash, the branch name and `latest`. It refuses a working tree with uncommitted changes, since the hash tag names a commit.

Also carries sneak's `golines -m 77` line wrapping in three files, with no code change.

Unverified: a real build on the Docker host and a real push from this commit.
Deviation: sneak's FIXME comments are out, because the linter refuses them; they are #227, #228 and #229.

Model: opus-5-5
Co-authored-by: sneak <sneak@sneak.berlin>

internal/requestlog/requestlog.go

@@ -19,27 +19,34 @@ const (
 	// ActionForward is a request discriminator allowed, which rproxy passes to
 	// the app.
 	ActionForward = "forward"
+
 	// ActionTooLarge is a request over the header limits.
 	ActionTooLarge = "too_large"
+
 	// ActionRateLimited is a request refused because it took its client
 	// over a rate limit, which bans the client.
 	ActionRateLimited = "rate_limited"
+
 	// ActionBanned is a request refused because a ban covers its client,
 	// or because it matched a ban rule, asked for a trap path or the
 	// CrowdSec decision list lists its client, each of which bans the
 	// client.
 	ActionBanned = "banned"
+
 	// ActionRuleBlocked is a request refused because it matched a block
 	// rule.
 	ActionRuleBlocked = "rule_blocked"
+
 	// ActionWAFBlocked is a request refused because the Core Rule Set
 	// scored it at or over SWW_WAF_ANOMALY_THRESHOLD.
 	ActionWAFBlocked = "waf_blocked"
+
 	// ActionDenied is a request refused because its client is in
 	// SWW_DENY_NETS, in a blocklist while SWW_BLOCKLIST_ACTION is deny,
 	// or listed by a DNSBL zone, or scored a hit by AbuseIPDB, while
 	// SWW_REPUTATION_ACTION is deny.
 	ActionDenied = "denied"
+
 	// ActionCountryDenied is a request refused for its client's country.
 	ActionCountryDenied = "country_denied"
 	// ActionAdmin is a request discriminator answered at one of its own
@@ -255,7 +262,11 @@ func FormatTime(t time.Time) string {
 
 // Milliseconds is d in milliseconds, to the microsecond.
 func Milliseconds(d time.Duration) float64 {
-	return float64(d.Microseconds()) / float64(time.Millisecond/time.Microsecond)
+	return float64(
+		d.Microseconds(),
+	) / float64(
+		time.Millisecond/time.Microsecond,
+	)
 }
 
 // NewProcessLogger returns the logger for the process's own messages:
@@ -263,17 +274,25 @@ func Milliseconds(d time.Duration) float64 {
 // as a request line's, and instanceName, SWW_INSTANCE_NAME, as instance.
 // It writes only the messages at level, SWW_LOG_LEVEL, or more severe;
 // the request lines Write writes are never held back.
-func NewProcessLogger(w io.Writer, instanceName string, level slog.Level) *slog.Logger {
+func NewProcessLogger(
+	w io.Writer,
+	instanceName string,
+	level slog.Level,
+) *slog.Logger {
 	handler := slog.NewJSONHandler(w, &slog.HandlerOptions{
 		Level: level,
 		ReplaceAttr: func(groups []string, attr slog.Attr) slog.Attr {
 			if attr.Key == slog.TimeKey && len(groups) == 0 {
-				return slog.String(slog.TimeKey, FormatTime(attr.Value.Time()))
+				return slog.String(
+					slog.TimeKey,
+					FormatTime(attr.Value.Time()),
+				)
 			}
 
 			return attr
 		},
 	})
 
-	return slog.New(handler).With("type", "process", "instance", instanceName)
+	return slog.New(handler).
+		With("type", "process", "instance", instanceName)
 }