Update memcached

[tianon]

Changes:

• docker-library/memcached@6923e9c: Merge pull request Add "PARALLEL" to "make test" invocation memcached#62 from infosiftr/parallel-test
• docker-library/memcached@af2f393: Add "PARALLEL" to "make test" invocation

[github-actions]

Diff for 1db9f9b:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index cd78896..4df3831 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -3,10 +3,10 @@ GitRepo: https://github.com/docker-library/memcached.git
 
 Tags: 1.6.8, 1.6, 1, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
-GitCommit: dcaec15d8dcdf7ae6929b6c81e7bcc7c95a5fc75
+GitCommit: af2f39379f20b6d3f7d31df7295cb85144aa7f51
 Directory: debian
 
 Tags: 1.6.8-alpine, 1.6-alpine, 1-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: dcaec15d8dcdf7ae6929b6c81e7bcc7c95a5fc75
+GitCommit: af2f39379f20b6d3f7d31df7295cb85144aa7f51
 Directory: alpine
diff --git a/memcached_alpine/Dockerfile b/memcached_alpine/Dockerfile
index de2e8fe..fab1f6f 100644
--- a/memcached_alpine/Dockerfile
+++ b/memcached_alpine/Dockerfile
@@ -52,10 +52,11 @@ RUN set -x \
 		--enable-sasl-pwdb \
 		--enable-tls \
 		$enableExtstore \
-	&& make -j "$(nproc)" \
+	&& nproc="$(nproc)" \
+	&& make -j "$nproc" \
+	\
+	&& make test PARALLEL="$nproc" \
 	\
-# TODO https://github.com/memcached/memcached/issues/382 "t/chunked-extstore.t is flaky on arm32v6"
-	&& make test \
 	&& make install \
 	\
 	&& cd / && rm -rf /usr/src/memcached \
diff --git a/memcached_latest/Dockerfile b/memcached_latest/Dockerfile
index 1f5bd9d..5b06a6f 100644
--- a/memcached_latest/Dockerfile
+++ b/memcached_latest/Dockerfile
@@ -55,13 +55,14 @@ RUN set -x \
 		--enable-sasl-pwdb \
 		--enable-tls \
 		$enableExtstore \
-	&& make -j "$(nproc)" \
+	&& nproc="$(nproc)" \
+	&& make -j "$nproc" \
 	\
 # see https://github.com/docker-library/memcached/pull/54#issuecomment-562797748 and https://bugs.debian.org/927461 for why we have to munge openssl.cnf
 	&& sed -i.bak 's/SECLEVEL=2/SECLEVEL=1/g' /etc/ssl/openssl.cnf \
-# TODO https://github.com/memcached/memcached/issues/382 "t/chunked-extstore.t is flaky on arm32v6"
-	&& make test \
+	&& make test PARALLEL="$nproc" \
 	&& mv /etc/ssl/openssl.cnf.bak /etc/ssl/openssl.cnf \
+	\
 	&& make install \
 	\
 	&& cd / && rm -rf /usr/src/memcached \