dabuild: add support for `DABUILD_DOCKER` env var

Closes #45

Signed-off-by: Richard Mortier <mort@cantab.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/dabuild.in b/dabuild.in
index fb44412..c761c7e 100755
--- a/dabuild.in
+++ b/dabuild.in
@@ -32,6 +32,15 @@ case "$DABUILD_ARCH" in
           "You may force it setting DABUILD_ARCH=\"xxx\" in invocation";;
 esac
 
+## allow setting of `docker` command by env variable
+[ ! "$DABUILD_DOCKER" ] && DABUILD_DOCKER=docker
+case "$DABUILD_DOCKER" in
+  podman|docker ) ;;
+  * ) die "Unsupported docker CLI replacement \"$DABUILD_DOCKER\" detected." \
+          "Expected one of: docker|podman"
+      ;;
+esac
+
 ## use branch to figure out most appropriate alpine version
 if [ "$DABUILD_VERSION" ]; then
   ABUILD_VERSION=$DABUILD_VERSION