make some snippet content configurable

README.md

@@ -51,6 +51,13 @@ $ TOKEN="XXXXXX influxdb access token with rw access rights XXXXXX"
 $ influx delete --token "${TOKEN}" --org minibeieliorg --bucket minibeielibucket --start 2021-06-01T10:53:00Z --stop 2021-06-01T10:53:00Z --predicate '_measurement="measurement" AND deveui="0000D3A659832805"'
 ```
 
+### Create and Push Docker Image
+```
+Example:
+$ podman login --username drpuur git.nbit.ch
+$ podman build --tag git.nbit.ch/drpuur/mini-beieli-web:2025080701 -f ./Dockerfile
+$ podman push git.nbit.ch/drpuur/wo-bisch-web:2025080701
+```
 
 Autor: Joerg Lehmann, nbit Informatik GmbH
 

main.go

@@ -9,6 +9,23 @@ import (
 	"time"
 )
 
+func getConfigFromEnv(string item) {
+	var res = ""
+	configarr = strings.Split(os.Getenv("CONFIG_ENVVAR", "ADDRESS,INITIALCOST,MONTHLYCOST"), ',')
+	if len(configarr) < 3 {
+		logit("CONFIG_ENVVAR has less than 3 elements")
+	}
+	if item == "address" {
+		res = configarr[0]
+	} else if item == "initialcost" {
+		res = configarr[1]
+	} else if item == "monthlycost" {
+		res = configarr[2]
+	} else {
+		res = "NOTFOUND"
+	}
+}
+
 func serveTemplate(w http.ResponseWriter, r *http.Request) {
 	logit("Called URL: " + r.URL.Path)
 	// wennn kein File angegeben ist: index.html
@@ -40,6 +57,9 @@ func serveTemplate(w http.ResponseWriter, r *http.Request) {
 
 	t := time.Now()
 	var datetimestring = t.Format("20060102150405")
+	var address = getConfigFromEnv("address")
+	var initialcost = getConfigFromEnv("initialcost")
+	var monthlycost = getConfigFromEnv("monthlycost")
 	var scales = getMyDevs(userName)
 	var last_metrics []OneMetric
 
@@ -63,12 +83,19 @@ func serveTemplate(w http.ResponseWriter, r *http.Request) {
 	data := struct {
 		UserName       string
 		DateTimeString string
+		Address        string
+		InitialCost    string
+		MonthlyCost    string
+		Address        string
 		Scales         []string
 		LastMetrics    []OneMetric
 		QueryValues    map[string][]string
 	}{
 		userName,
 		datetimestring,
+		address,
+		initialcost,
+		monthlycost,
 		scales,
 		last_metrics,
 		query_values,