Created an Alpine-version

Dockerfile

@@ -1,11 +1,10 @@
-FROM ubuntu:18.04
-RUN apt-get update && apt-get upgrade -y && apt-get install wget gnupg expect -y && \
-    wget -O - https://packages.icinga.com/icinga.key | apt-key add -
-RUN printf "deb http://packages.icinga.com/ubuntu icinga-bionic main\ndeb-src http://packages.icinga.com/ubuntu icinga-bionic main" > /etc/apt/sources.list.d/icinga2.list && \
-    apt-get update && apt-get install icinga2 -y && \
-    mkdir /run/icinga2 && chown nagios:nagios /run/icinga2 && \
+FROM alpine:3.11
+RUN apk update && \
+    apk add bash && \
+    apk add icinga2 && \
+    mkdir /run/icinga2 && chown icinga:icinga /run/icinga2 && \
     mkdir -p /var/lib/icinga2/certs && \
-    chown -R nagios:nagios /var/lib/icinga2/certs
+    chown -R icinga:icinga /var/lib/icinga2/certs
 
 COPY create-satellite.sh /create-satellite.sh
 COPY run-icinga.sh /run-icinga.sh

README.md

@@ -17,18 +17,15 @@ Everything is controlled using the follwing environment variables.
 * **TICKET** is the ticket you get from the master (if you are using Director
   you find it under the Agent tab of the host).
 * **ACCEPT_CONFIG** takes a ***y*** or ***n*** value for yes or no. The default is
-  ***n***
+  ***n***.
 * **ACCEPT_COMMANDS** takes a ***y*** or ***n*** value for yes or no. The default is
-  ***n***
+  ***n***.
 * **DISABLE_CONFD** takes a ***y*** or ***n*** value for yes or no. The default is
   ***y***. This should be a sane default for most people.
-* **LOCAL_TIMEZONE** sets the local timezone of the satellite. For example
-  *Europe/Stockholm* or *America/New_York*
 
 ## Example usage
 ```
 #> docker run -d --name my-icinga-sat \
-  -p 5665:5665 \
   -e CN=icinga-sat02.local \
   -e PARENTHOST=icinga-master.local \
   -e PARENTCN=icinga-master.local \
@@ -44,9 +41,6 @@ version: "3.8"
 services:
   my-icinga-sat:
     image: jackbenny/icinga-satellite
-    ports:
-      - 5665:5665
-    restart:always
     environment:
       - CN=icinga-sat02.local
       - ZONE=icinga-sat02.local
@@ -57,15 +51,5 @@ services:
       - ACCEPT_CONFIG=y
       - ACCEPT_COMMANDS=y
       - DISABLE_CONFD=y
-      - LOCAL_TIMEZONE=Europe/Stockholm
 ```
 
-## Images
-
-> **NOTE:** Currently there are some problems with the Alpine image. Use the main image
-> instead, tagged *0.n*.
-
-There are two available images for you to choose from. The default one (0.*n*) is based on
-Ubuntu 18.04, with Icinga2 from Icingas official repository. The other image (0.*n*-alpine) is
-based on Alpine 3.11, with Icinga2 from Alpines repository. From 0.1.1-alpine and up, the Alpine
-image is built on the latest Alpine. The Alpine image is much smaller in size.

create-satellite.sh

@@ -37,11 +37,6 @@ else
     DISABLE_CONF=" "
 fi
 
-# Set the local timezone
-if [ ! -z "$LOCAL_TIMEZONE" ]; then
-	ln -sf /usr/share/zoneinfo/"$LOCAL_TIMEZONE" /etc/localtime
-fi
-
 icinga2 pki new-cert --cn "$CN" \
 --key /var/lib/icinga2/certs/"${CN}".key \
 --cert /var/lib/icinga2/certs/"${CN}".crt