diff --git a/Makefile b/Makefile
index 0d2a55b..d1f1a9e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,37 +1,10 @@
 # VERSION
 VERSION ?= $(shell git describe --abbrev=0)+hash.$(shell git rev-parse --short HEAD)
 
-
 DESTDIR    ?=
 PREFIX     ?= /usr/local
 EXECUTABLE := dyndns-client
 
-# CONTAINER_RUNTIME
-CONTAINER_RUNTIME ?= $(shell which podman)
-
-# BUILD_IMAGE
-BUILD_IMAGE_REGISTRY_HOST   := docker.io
-BUILD_IMAGE_NAMESPACE       := volkerraschek
-BUILD_IMAGE_REPOSITORY      := build-image
-BUILD_IMAGE_VERSION         := latest
-BUILD_IMAGE_FULLY_QUALIFIED := ${BUILD_IMAGE_REGISTRY_HOST}/${BUILD_IMAGE_NAMESPACE}/${BUILD_IMAGE_REPOSITORY}:${BUILD_IMAGE_VERSION:v%=%}
-
-# BASE_IMAGE
-BASE_IMAGE_REGISTRY_HOST    := docker.io
-BASE_IMAGE_NAMESPACE        := library
-BASE_IMAGE_REPOSITORY       := alpine
-BASE_IMAGE_VERSION          := 3.12.0
-BASE_IMAGE_FULLY_QUALIFIED  := ${BASE_IMAGE_REGISTRY_HOST}/${BASE_IMAGE_NAMESPACE}/${BASE_IMAGE_REPOSITORY}:${BASE_IMAGE_VERSION:v%=%}
-
-# CONTAINER_IMAGE
-CONTAINER_IMAGE_REGISTRY_HOST   := docker.io
-CONTAINER_IMAGE_REGISTRY_USER   := volkerraschek
-CONTAINER_IMAGE_NAMESPACE       := ${CONTAINER_IMAGE_REGISTRY_USER}
-CONTAINER_IMAGE_REPOSITORY      := ${EXECUTABLE}
-CONTAINER_IMAGE_VERSION         := latest
-CONTAINER_IMAGE_FULLY_QUALIFIED := ${CONTAINER_IMAGE_REGISTRY_HOST}/${CONTAINER_IMAGE_NAMESPACE}/${CONTAINER_IMAGE_REPOSITORY}:${CONTAINER_IMAGE_VERSION:v%=%}
-CONTAINER_IMAGE_UNQUALIFIED     := ${CONTAINER_IMAGE_NAMESPACE}/${CONTAINER_IMAGE_REPOSITORY}:${CONTAINER_IMAGE_VERSION:v%=%}
-
 # BINARIES
 # ==============================================================================
 ${EXECUTABLE}: clean bin/tmp/${EXECUTABLE}
@@ -69,58 +42,6 @@ clean:
 	rm --force ${EXECUTABLE} || true
 	rm --force --recursive bin || true
 
-# CONTAINER IMAGE
-# ==============================================================================
-container-image/build:
-	${CONTAINER_RUNTIME} build \
-		--build-arg BASE_IMAGE=${BASE_IMAGE_FULLY_QUALIFIED} \
-		--build-arg BUILD_IMAGE=${BUILD_IMAGE_FULLY_QUALIFIED} \
-		--build-arg EXECUTABLE=${EXECUTABLE} \
-		--build-arg GONOPROXY=$(shell go env GONOPROXY) \
-		--build-arg GONOSUMDB=$(shell go env GONOSUMDB) \
-		--build-arg GOPRIVATE=$(shell go env GOPRIVATE) \
-		--build-arg GOPROXY=$(shell go env GOPROXY) \
-		--build-arg GOSUMDB=$(shell go env GOSUMDB) \
-		--build-arg VERSION=${VERSION:v%=%} \
-		--no-cache \
-		--tag ${CONTAINER_IMAGE_FULLY_QUALIFIED} \
-		--tag ${CONTAINER_IMAGE_UNQUALIFIED} \
-		.
-
-container-image/push: container-image/build
-	${CONTAINER_RUNTIME} login ${CONTAINER_IMAGE_REGISTRY_HOST} --username ${CONTAINER_IMAGE_REGISTRY_USER} --password ${CONTAINER_IMAGE_REGISTRY_PASSWORD}
-	${CONTAINER_RUNTIME} push ${CONTAINER_IMAGE_FULLY_QUALIFIED}
-
-# CONTAINER RUN - TEST
-# ==============================================================================
-PHONY+=container-run/test
-container-run/test:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# CONTAINER RUN - CLEAN
-# ==============================================================================
-PHONY+=container-run/clean
-container-run/clean:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# CONTAINER RUN - COMMAND
-# ==============================================================================
-PHONY+=container-run
-container-run:
-	${CONTAINER_RUNTIME} run \
-		--env GONOPROXY=$(shell go env GONOPROXY) \
-		--env GONOSUMDB=$(shell go env GONOSUMDB) \
-		--env GOPRIVATE=$(shell go env GOPRIVATE) \
-		--env GOPROXY=$(shell go env GOPROXY) \
-		--env GOSUMDB=$(shell go env GOSUMDB) \
-		--env EPOCH=${EPOCH} \
-		--env VERSION=${VERSION:v%=%} \
-		--env RELEASE=${RELEASE} \
-		--rm \
-		--volume $(shell pwd):/workspace \
-			${BUILD_IMAGE_FULLY_QUALIFIED} \
-				make ${COMMAND} \
-
 # UN/INSTALL
 # ==============================================================================
 PHONY+=install