cmd/healthcheck: add --host and --port flags

But really, this could be autodiscovered through an abstract Unix socket
instead.

.github/e2e.sh

@@ -102,6 +102,14 @@ EOF
             nix run nixpkgs#hurl -- --test --error-format=long .github/e2e.hurl
         }
         echo ::endgroup::
+
+        # Docker Compose
+        echo ::group::Docker healthcheck test
+        docker compose ps --format json \
+            | jq 'map(select(.State != "running" or .Health == "unhealthy")) | map({Service, State, Status, Health})'
+        docker compose ps --format json \
+            | jq -e 'map(select(.State != "running" or .Health == "unhealthy")) | length == 0'
+        echo ::endgroup::
         ;;
 
     coverage)

cmd/healthcheck.go

@@ -4,13 +4,27 @@
 package cmd
 
 import (
+	"fmt"
 	"net/http"
 
 	"github.com/spf13/cobra"
 )
 
+type healthcheckOptions struct {
+	Host string
+	Port uint16
+}
+
+// HealthcheckOptions stores the command-line option values for the healthcheck
+// command.
+var HealthcheckOptions healthcheckOptions
+
 func init() {
 	RootCmd.AddCommand(healthcheckCmd)
+	healthcheckCmd.Flags().Uint16VarP(&HealthcheckOptions.Port, "port", "p", 8080,
+		"HTTP port for health check")
+	healthcheckCmd.Flags().StringVarP(&HealthcheckOptions.Host, "host", "h", "localhost",
+		"HTTP host for health check")
 }
 
 var healthcheckCmd = &cobra.Command{
@@ -18,7 +32,9 @@ var healthcheckCmd = &cobra.Command{
 	Short: "Check healthness",
 	Long:  `Check if Akvorado is alive using the builtin HTTP endpoint.`,
 	RunE: func(cmd *cobra.Command, _ []string) error {
-		resp, err := http.Get("http://localhost:8080/api/v0/healthcheck")
+		resp, err := http.Get(fmt.Sprintf("http://%s:%d/api/v0/healthcheck",
+			HealthcheckOptions.Host,
+			HealthcheckOptions.Port))
 		if err != nil {
 			return err
 		}

console/data/docs/99-changelog.md

@@ -14,6 +14,7 @@ identified with a specific icon:
 
 - 🩹 *docker*: restart geoip container on boot
 - 🌱 *orchestrator*: add `kafka`→`manage-topic` flag to enable or disable topic management
+- 🌱 *cmd*: add `--host` and `--port` flags to `akvorado healthcheck`
 
 ## 2.0.3 - 2025-11-19