Remove (broken) armel support

Dockerfile

@@ -11,7 +11,6 @@ WORKDIR /root
 RUN if [ "$BUILDPLATFORM" != "$TARGETPLATFORM" ] ; then \
 		case ${TARGETPLATFORM} in \
 			"linux/arm64")	echo 'export CROSSBUILD_ARCH=arm64 CROSS_COMPILE_TARGET=aarch64-linux-gnu' > env ;; \
-			"linux/arm/v6")	echo 'export CROSSBUILD_ARCH=armel CROSS_COMPILE_TARGET=arm-linux-gnueabi' > env ;; \
 			"linux/arm/v7")	echo 'export CROSSBUILD_ARCH=armhf CROSS_COMPILE_TARGET=arm-linux-gnueabihf' > env ;; \
 			"linux/386")	echo 'export CROSSBUILD_ARCH=i386 CROSS_COMPILE_TARGET=i686-linux-gnu' > env ;; \
 			"linux/amd64")	echo 'export CROSSBUILD_ARCH=amd64 CROSS_COMPILE_TARGET=x86_64-linux-gnu' > env ;; \

README.md

@@ -18,7 +18,6 @@ The following prebuilt tags are available at [Docker Hub](https://hub.docker.com
 
 * **`latest`: For all supported devices listed below (multi-arch)**
 * `latest-arm64`: For arm64 (aarch64) devices
-* `latest-armel`: For armv6l (armel) devices
 * `latest-armv7l`: For armv7l (armhf) devices
 * `latest-i386`: For i386 devices
 * `latest-amd64`: For amd64 devices

azure-pipelines.yaml

@@ -43,9 +43,6 @@ jobs:
         arm64:
           ARCH: "arm64"
           DOCKER_IMAGE_TAG: "latest-arm64"
-        armel:
-          ARCH: "armel"
-          DOCKER_IMAGE_TAG: "latest-armel"
         armhf:
           ARCH: "armhf"
           DOCKER_IMAGE_TAG: "latest-armv7l"
@@ -55,7 +52,7 @@ jobs:
         amd64:
           ARCH: "amd64"
           DOCKER_IMAGE_TAG: "latest-amd64"
-      maxParallel: 5
+      maxParallel: 4
 
     steps:
     - checkout: self
@@ -130,7 +127,6 @@ jobs:
         docker manifest create \
           $(DOCKER_IMAGE_BASENAME):$(DOCKER_IMAGE_TAG) \
           --amend $(DOCKER_IMAGE_BASENAME):latest-arm64 \
-          --amend $(DOCKER_IMAGE_BASENAME):latest-armel \
           --amend $(DOCKER_IMAGE_BASENAME):latest-armv7l \
           --amend $(DOCKER_IMAGE_BASENAME):latest-i386 \
           --amend $(DOCKER_IMAGE_BASENAME):latest-amd64