Enhance docker-build doc for debian

- Older OS release for better portability
- Add hint about musl libc
- Use apt-get over apt cmd to fix api warnings

1 files changed, 2 insertions, 1 deletions

diff --git a/configure b/configure
index fb6253b..e15b0b7 100755
--- a/configure
+++ b/configure
@@ -83,7 +83,8 @@ printMakefile () {
     printf '%s'   ' -Wno-error=unused-function -Wno-error=unused-label'
     printf '%s'   ' -Wno-error=unused-variable -Wno-error=unused-parameter'
     printf '%s'   ' -Wno-error=unused-const-variable'
-    printf '%s'   ' -Werror=implicit-fallthrough=1'
+    # Not supported by debian 9 and older
+    #printf '%s'   ' -Werror=implicit-fallthrough=1'
     printf '%s'   ' -Wno-error=unused-but-set-variable'
     printf '%s'   ' -Wno-unused-function -Wno-unused-parameter'
     printf '%s\n' ' -DPROJECT_VERSION=$(PROJECT_VERSION)'