Use debian:10 rather

docker/arm64v8/buster/Dockerfile

@@ -1,4 +1,4 @@
-FROM arm64v8/ubuntu:bionic
+FROM arm64v8/debian:10
 
 ENV LANG C.UTF-8
 ENV DEBIAN_FRONTEND=noninteractive
@@ -24,29 +24,14 @@ RUN apt-get update && \
         xz-utils \
         zlib1g-dev \
 		libnuma-dev libgmp10 libssl-dev liblzma-dev libbz2-dev wget lsb-release software-properties-common apt-transport-https gcc autoconf automake build-essential gzip patchelf tree \
-		llvm-9 clang-9 && \
+		llvm-11 clang-11 && \
     rm -rf /var/lib/apt/lists/*
 
-RUN update_opt.sh 9 1
+RUN update_opt.sh 11 1
 
 ARG GHCUP_VERSION=0.1.18.0
 ARG GPG_KEY=7784930957807690A66EBDBE3786C5262ECB4A3F
 
-# install libtinfo.so.6 for ghcup
-RUN cd /tmp && \
-	curl -sSfL -O https://ftp.gnu.org/pub/gnu/ncurses/ncurses-6.1.tar.gz && \
-	tar xf ncurses-6.1.tar.gz && \
-	cd ncurses-6.1/ && \
-	./configure --prefix=/root/.local \
-		--with-shared \
-		--with-versioned-syms \
-		--without-ada \
-		--with-termlib && \
-	make -j && \
-	make install && \
-	cd && \
-	rm -rf /tmp/ncurses-6.1
-
 # install ghcup
 RUN gpg --batch --keyserver keys.openpgp.org --recv-keys $GPG_KEY && \
     curl -sSfL -O https://downloads.haskell.org/~ghcup/$GHCUP_VERSION/aarch64-linux-ghcup-$GHCUP_VERSION && \
@@ -54,12 +39,7 @@ RUN gpg --batch --keyserver keys.openpgp.org --recv-keys $GPG_KEY && \
     curl -sSfL -O https://downloads.haskell.org/~ghcup/$GHCUP_VERSION/SHA256SUMS.sig && \
     gpg --verify SHA256SUMS.sig SHA256SUMS && \
     sha256sum -c --ignore-missing SHA256SUMS && \
-    mv aarch64-linux-ghcup-$GHCUP_VERSION /usr/bin/ghcup.bin && \
-    chmod +x /usr/bin/ghcup.bin && \
-	echo '#!/bin/sh'                               >  /usr/bin/ghcup && \
-	echo ''                                        >> /usr/bin/ghcup && \
-	echo 'export LD_LIBRARY_PATH=/root/.local/lib' >> /usr/bin/ghcup && \
-	echo 'exec /usr/bin/ghcup.bin "$@"'            >> /usr/bin/ghcup && \
+    mv aarch64-linux-ghcup-$GHCUP_VERSION /usr/bin/ghcup && \
     chmod +x /usr/bin/ghcup && \
     rm -rf SHA256SUMS SHA256SUMS.sig
 
@@ -74,10 +54,7 @@ ENV NO_COLOR=1
 RUN ghcup config set gpg-setting GPGStrict && \
 	ghcup --verbose install ghc   --isolate=/usr     --force ${GHC} && \
 	ghcup --verbose install cabal --isolate=/usr/bin --force ${CABAL_INSTALL} && \
-	find "/usr/lib/ghc-${GHC}/" \( -name "*_p.a" -o -name "*.p_hi" \) -type f -delete && \
-	rm -r "/usr/share/doc/ghc-${GHC}" && \
-	rm -rf /tmp/ghcup* && \
-	ghcup gc -p -s -c -t
+	ghcup gc -s -c -t
 
 ENV PATH /root/.cabal/bin:/root/.ghcup/bin:/root/.local/bin:$PATH