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-rw-r--r--src/librc/librc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/librc/librc.c b/src/librc/librc.c
index 3e1f0d83..fdde3d5a 100644
--- a/src/librc/librc.c
+++ b/src/librc/librc.c
@@ -285,6 +285,9 @@ detect_container(const char *systype)
return RC_SYS_RKT;
else if (file_regex("/proc/1/environ", "container=systemd-nspawn"))
return RC_SYS_SYSTEMD_NSPAWN;
+ else if (exists("/.dockerenv"))
+ return RC_SYS_DOCKER;
+ /* old test, I'm not sure when this was valid. */
else if (file_regex("/proc/1/environ", "container=docker"))
return RC_SYS_DOCKER;
#endif