v1.5.0-rc4 removes services-account as parameter

* no longer used since helm v3 and abolition of tiller

Changelog.md

 # Changelog
 
+## [1.5.0-rc4] - 2020-01-08
+### Fixes
+* removes ```service_account``` as parameter  
+    * no longer used since helm v3 and abolition of tiller 
+
 ## [1.5.0-rc3] - 2020-01-07
 ### Changes
 * upgrades **helm** to version v3.4.2
@@ -7,7 +12,7 @@
 ## [1.5.0-rc2] - 2020-12-18
 ### Fixes
 * fixing _--timeout_ setting to **helm** install routine and setting new default of 120s
-* cmp. _--timeout_ variable has to be pattern of [Golang duration](https://golang.org/pkg/time/#ParseDuration) 
+* cmp. _--timeout_ variable has to been pattern of [Golang duration](https://golang.org/pkg/time/#ParseDuration) 
 
 ## [1.5.0-rc1] - 2020-12-18
 ### Changes
@@ -59,7 +64,7 @@
 ### Changes
 * updates **helm** from 2.12.3 to 2.13.0
 * script now runs as non-root user
-* removes namespace from kubectl-context and added it explicitely to helm
+* removes namespace from kubectl-context and added it explicitly to helm
 
 ## [1.3.2] - 2019-02-21
 ### Changed
@@ -82,7 +87,7 @@
 
 ## [1.2.3] - 2018-11-05
 ### Changed
-* option `--certificate-authority` is now optional, so you do not need to provide it in case your apiserver is using a valid public certificate
+* option `--certificate-authority` is now optional, so you do not need to provide it in case your api server is using a valid public certificate
 * removed image-import prior to build - introduced in v1.2.1 - since it is useless
 
 ## [1.2.2] - 2018-09-12
@@ -99,7 +104,7 @@
 * `add-repo` command to add remote repositories
 
 ### Changed
-* increased timeout from 60 to 120
+* increase timeout from 60 to 120
 
 ## [1.1.1] - 2018-08-14
 ### Added
@@ -132,4 +137,5 @@
 [1.4.7]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.6...release%2F1.4.7
 [1.5.0-rc1]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.7...release%2F1.5.0-rc1
 [1.5.0-rc2]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.5.0-rc1...release%2F1.5.0-rc2
-[1.5.0-rc3]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.5.0-rc2...release%2F1.5.0-rc3
\ No newline at end of file
+[1.5.0-rc3]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.5.0-rc2...release%2F1.5.0-rc3
+[1.5.0-rc4]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.5.0-rc3...release%2F1.5.0-rc4
\ No newline at end of file

assets/deployer

@@ -20,7 +20,6 @@ certificate_authority=""
 token=""
 namespace=""
 cluster_url=""
-service_account=""
 repo_url=""
 build_context="."
 timeout="120s"
@@ -92,10 +91,6 @@ while true; do
 			cluster_url="$2"
 			shift 2
 			;;
-		--service-account)
-			service_account="$2"
-			shift 2
-			;;
 		--output|--input)
 			image_file="$2"
 			shift 2
@@ -186,11 +181,6 @@ prepare_kubectl() {
 		echo "Please be sure to provide a namespace via --namespace"
 	fi
 
-	if [ "${service_account}" == "" ];then
-		echo "failed! No service-account set."
-		echo "Please be sure to provide a service-account via --service-account"
-	fi
-
 	echo ""
 
 	if [ "${certificate_authority}" != "" ];then