stop unneeded s6 services instead of exec sleep inf (#126)

Dockerfile: fix case

Dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/sdr-enthusiasts/docker-baseimage:mlatclient as buildimage
+FROM ghcr.io/sdr-enthusiasts/docker-baseimage:mlatclient AS buildimage
 
 SHELL ["/bin/bash", "-x", "-o", "pipefail", "-c"]
 RUN \

rootfs/etc/s6-overlay/scripts/adsbx-stats

@@ -23,13 +23,13 @@ source /scripts/interpret_ultrafeeder_config
 # Check if ADSBExchange is configured
 if ! grep -i adsbexchange.com <<< "$ULTRAFEEDER_CONFIG" >/dev/null 2>&1; then
     "${s6wrap[@]}" echo "AdsbExchange not configured - no stats package needed"
-    exec sleep infinity
+    stop_service
 fi
 
 # Check if ADSBExchange stats are disabled
 if chk_disabled "$ADSBX_STATS" ; then
     "${s6wrap[@]}" echo "AdsbExchange stats disabled"
-    exec sleep infinity
+    stop_service
 fi
 
 # prep work:
@@ -42,7 +42,7 @@ fi
 if [[ ! -f /usr/local/bin/json-status ]]; then
     if ! curl -sSL -o /usr/local/bin/json-status https://raw.githubusercontent.com/sdr-enthusiasts/docker-adsb-ultrafeeder/main/downloads/adsbexchange-json-status; then
         "${s6wrap[@]}" echo "ERROR: AdsbExchange configured, but cannot download stats package! AdsbExchange will be fed but stats will not be available"
-        exec sleep infinity
+        stop_service
     fi
     chmod 755 /usr/local/bin/json-status
 fi

rootfs/etc/s6-overlay/scripts/mlat-client

@@ -42,13 +42,13 @@ declare -A pid_array
 if [[ -z "${MLAT_CONFIG}" ]]
 then
     "${s6wrap[@]}" --args echo "Warning: MLAT_CONFIG not defined - MLAT will be disabled."
-    exec sleep infinity
+    stop_service
 fi
 
 if [[ -z "${MLAT_USER}" ]] && [[ -z "${UUID}" ]]
 then
     "${s6wrap[@]}" --args echo "ERROR: either UUID or MLAT_USER must be defined - MLAT will be disabled."
-    exec sleep infinity
+    stop_service
 fi
 
 function check_gpsd() {

rootfs/etc/s6-overlay/scripts/mlathub

@@ -31,12 +31,12 @@ fi
 
 if [[ -z "${MLAT_CONFIG}" ]] && [[ -z "$MLATHUB_NET_CONNECTOR" ]] && [[ ${#MLATHUB_CONF_ARR[@]} == 0 ]] && ! chk_enabled "${MLATHUB_ENABLE}"; then
     "${s6wrap[@]}" --args echo "No MLAT servers have been defined in MLAT_CONFIG and no external sources have been defined in MLATHUB_NET_CONNECTOR - no need to start MLATHUB"
-    exec sleep infinity
+    stop_service
 fi
 
 if chk_enabled "${MLATHUB_DISABLE}"; then
     "${s6wrap[@]}" --args echo "MLATHUB is disabled."
-    exec sleep infinity
+    stop_service
 fi
 
 # Build the readsb command line based on options