diff --git a/Dockerfile b/Dockerfile
index 47f17ad..77c54e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,28 @@
 FROM docker.io/library/alpine:3.18.5
 
-RUN echo "http://dl-3.alpinelinux.org/alpine/edge/testing/" >> /etc/apk/repositories
-RUN apk upgrade
-RUN apk add --update perl perl-lockfile-simple perl-dbi perl-dbd-pg perl-dbd-mysql fetchmail
+# The file /etc/apk/repositories contains a list of the apk repositories. By
+# default contains this file a list of the stable repositories pointing to the
+# alpine version.
+#
+# Some perl packages are not part of the stable repositories. For this reason
+# are the repositories switched to edge to access directly the latest versions
+# of this apk packages.
+#
+# Using stable and edge at the same time is not allowed. For more information,
+# take a look into the documentation of the edge repository.
+#
+#   https://wiki.alpinelinux.org/wiki/Repositories#Edge
+RUN echo "https://dl-cdn.alpinelinux.org/alpine/edge/main" > /etc/apk/repositories
+RUN echo "https://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories
+
+# Install packages
+RUN apk upgrade && \
+    apk add --update perl perl-lockfile-simple perl-dbi perl-dbd-pg perl-dbd-mysql fetchmail
+
 RUN mkdir --parents /run/fetchmail
 
 COPY --chown=fetchmail:fetchmail fetchmail.pl /usr/local/bin/fetchmail.pl
 
 USER fetchmail
 
-ENTRYPOINT [ "/usr/bin/perl" ]
 CMD [ "/usr/local/bin/fetchmail.pl" ]
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 0bd569b..e4f1bcd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,6 @@
-# CONTAINER_RUNTIME
-# The CONTAINER_RUNTIME variable will be used to specified the path to a
-# container runtime. This is needed to start and run a container image.
-CONTAINER_RUNTIME?=$(shell which podman)
+# PODMAN_BIN's and tools
+PODMAN_BIN?=$(shell which podman)
+SKOPEO_BIN?=$(shell which skopeo)
 
 # FETCHMAIL_IMAGE_REGISTRY_NAME
 # Defines the name of the new container to be built using several variables.
@@ -12,33 +11,39 @@ FETCHMAIL_IMAGE_NAMESPACE?=${FETCHMAIL_IMAGE_REGISTRY_USER}
 FETCHMAIL_IMAGE_NAME:=postfixadmin-fetchmail
 FETCHMAIL_IMAGE_VERSION?=latest
 FETCHMAIL_IMAGE_FULLY_QUALIFIED=${FETCHMAIL_IMAGE_REGISTRY_NAME}/${FETCHMAIL_IMAGE_NAMESPACE}/${FETCHMAIL_IMAGE_NAME}:${FETCHMAIL_IMAGE_VERSION}
-FETCHMAIL_IMAGE_UNQUALIFIED=${FETCHMAIL_IMAGE_NAMESPACE}/${FETCHMAIL_IMAGE_NAME}:${FETCHMAIL_IMAGE_VERSION}
+
 
 # BUILD CONTAINER IMAGE
 # ==============================================================================
 PHONY:=container-image/build
 container-image/build:
-	${CONTAINER_RUNTIME} build \
+	${PODMAN_BIN} build \
 		--file Dockerfile \
 		--no-cache \
 		--pull \
 		--tag ${FETCHMAIL_IMAGE_FULLY_QUALIFIED} \
-		--tag ${FETCHMAIL_IMAGE_UNQUALIFIED} \
 		.
 
 # DELETE CONTAINER IMAGE
 # ==============================================================================
 PHONY:=container-image/delete
 container-image/delete:
-	- ${CONTAINER_RUNTIME} image rm ${FETCHMAIL_IMAGE_FULLY_QUALIFIED} ${FETCHMAIL_IMAGE_UNQUALIFIED}
-	- ${CONTAINER_RUNTIME} image rm ${BASE_IMAGE_FULL}
+	- ${PODMAN_BIN} image rm ${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
+	- ${PODMAN_BIN} image rm ${BASE_IMAGE_FULL}
 
 # PUSH CONTAINER IMAGE
 # ==============================================================================
 PHONY+=container-image/push
 container-image/push:
-	echo ${FETCHMAIL_IMAGE_REGISTRY_PASSWORD} | ${CONTAINER_RUNTIME} login ${FETCHMAIL_IMAGE_REGISTRY_NAME} --username ${FETCHMAIL_IMAGE_REGISTRY_USER} --password-stdin
-	${CONTAINER_RUNTIME} push ${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
+	echo ${FETCHMAIL_IMAGE_REGISTRY_PASSWORD} | ${PODMAN_BIN} login ${FETCHMAIL_IMAGE_REGISTRY_NAME} --username ${FETCHMAIL_IMAGE_REGISTRY_USER} --password-stdin
+	${PODMAN_BIN} push ${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
+	${PODMAN_BIN} logout ${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
+
+# PUSH CONTAINER IMAGE TO DOCKER
+# ==============================================================================
+PHONY+=container-image/push-to-docker-daemon
+container-image/push-to-docker-daemon:
+	${PODMAN_BIN} push ${FETCHMAIL_IMAGE_FULLY_QUALIFIED} docker-daemon:${FETCHMAIL_IMAGE_FULLY_QUALIFIED}
 
 # PHONY
 # ==============================================================================