Do not build non-lts distros by default

Makefile

@@ -1,16 +1,16 @@
-all: bullseye bookworm trixie focal hirsute impish jammy kinetic noble
+all: bullseye bookworm trixie focal jammy noble
 
 stretch:
 	docker build -t vitexsoftware/debian:lts -t vitexsoftware/debian:stretch  -f debian:stretch/Dockerfile debian:stretch/
 
 buster:
-	docker build -t vitexsoftware/debian:oldstable -t vitexsoftware/debian:buster -f debian:buster/Dockerfile debian:buster/
+	docker build -t vitexsoftware/debian:buster -f debian:buster/Dockerfile debian:buster/
 
 bullseye:
-	docker build -t vitexsoftware/debian:stable -t vitexsoftware/debian:bullseye   -f debian:bullseye/Dockerfile debian:bullseye/
+	docker build -t vitexsoftware/debian:bullseye   -f debian:bullseye/Dockerfile debian:bullseye/
 
 bookworm:
-	docker build -t vitexsoftware/debian:testing -t vitexsoftware/debian:bookworm -f debian:bookworm/Dockerfile debian:bookworm/
+	docker build -t vitexsoftware/debian:bookworm -f debian:bookworm/Dockerfile debian:bookworm/
 
 bionic:
 	docker build -t vitexsoftware/ubuntu:latest -t vitexsoftware/ubuntu:bionic -f ubuntu:bionic/Dockerfile ubuntu:bionic/

debian:bullseye/Dockerfile

@@ -1,8 +1,8 @@
 FROM debian:bullseye
 
-ENV DEBIAN_FRONTEND noninteractive
-ENV LANG en_US.utf-8
-ENV LC_ALL en_US.utf-8
+ENV DEBIAN_FRONTEND=noninteractive
+ENV LANG=en_US.utf-8
+ENV LC_ALL=en_US.utf-8
 
 RUN apt-get update ; apt-get install -y wget ; echo "deb [signed-by=/usr/share/keyrings/vitexsoftware.gpg] http://repo.vitexsoftware.cz bullseye main" | tee /etc/apt/sources.list.d/vitexsoftware.list ; wget -O /usr/share/keyrings/vitexsoftware.gpg http://repo.vitexsoftware.cz/keyring.gpg
 RUN apt-get -y install locales ; echo "LC_ALL=en_US.UTF-8" >> /etc/environment ; echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen ; echo "LANG=en_US.UTF-8" > /etc/locale.conf ; locale-gen en_US.UTF-8