[beast: 3/4] MISC: Dockerfile-apt.in: disable check-update-po during docker distcheck

[Tim Janik <timj src gnome org>]

commit 5ca8e561d329fe3d7320102096de5d0e9abb01a7
Author: Tim Janik <timj gnu org>
Date:   Fri Jun 16 01:57:25 2017 +0200

    MISC: Dockerfile-apt.in: disable check-update-po during docker distcheck
    
    Updated PO files are needed for releases and are enabled by default for
    distcheck, but continuous integration builds including distcheck runs
    should succeed without forcing update-po on every git push.
    
    Signed-off-by: Tim Janik <timj gnu org>

 Makefile.am            |    3 ++-
 misc/Dockerfile-apt.in |    2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index b2a3604..b6002e5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -136,7 +136,8 @@ distcheck: dist
 .PHONY: distcheck distuninstallcheck-hook
 
 # == distcheck-checks ==
+DISTCHECK_PO = 1
 check-update-po:
-       $(Q) $(MAKE) -C po check-update-po
+       $(Q) [ "$(DISTCHECK_PO)" = "0" ] || $(MAKE) -C po check-update-po
 DISTCHECK_HOOK = distcheck # help add dependencies to 'distcheck' without overriding its definition
 $(DISTCHECK_HOOK): check-update-po
diff --git a/misc/Dockerfile-apt.in b/misc/Dockerfile-apt.in
index 410763e..8c5538f 100644
--- a/misc/Dockerfile-apt.in
+++ b/misc/Dockerfile-apt.in
@@ -84,7 +84,7 @@ RUN nice make uninstall
 
 # Carry out distcheck test if desired
 RUN `intent distcheck` && \
-    nice make distcheck
+    nice make distcheck DISTCHECK_PO=0
 
 # Show tarball
 RUN ls -l *.tar.xz