ci/README: add --no-cache to docker builds to force pkg update

diff --git a/ci/README.md b/ci/README.md
index 6807c3d60e2eceda644c3b9167cfb5e1c22448a8..92223fe29c842fd75f19b4b64cdb173b49539238 100644 (file)
--- a/ci/README.md
+++ b/ci/README.md
@@ -5,7 +5,7 @@ Docker Build
 
 ```
 $ export KNOT_BRANCH=2.8
-$ docker build -t registry.labs.nic.cz/knot/knot-resolver/ci/debian-buster:knot-$KNOT_BRANCH --build-arg KNOT_BRANCH=$KNOT_BRANCH debian-buster
+$ docker build --no-cache -t registry.labs.nic.cz/knot/knot-resolver/ci/debian-buster:knot-$KNOT_BRANCH --build-arg KNOT_BRANCH=$KNOT_BRANCH debian-buster
 
 $ docker login registry.labs.nic.cz
 $ docker push registry.labs.nic.cz/knot/knot-resolver/ci/debian-buster:knot-$KNOT_BRANCH
@@ -14,20 +14,20 @@ $ docker push registry.labs.nic.cz/knot/knot-resolver/ci/debian-buster:knot-$KNO
 * fedora
 
 ```
-$ docker build -t registry.labs.nic.cz/knot/knot-resolver/ci/fedora fedora
+$ docker build --no-cache -t registry.labs.nic.cz/knot/knot-resolver/ci/fedora fedora
 $ docker push registry.labs.nic.cz/knot/knot-resolver/ci/fedora
 ```
 
 * turris
 
 ```
-$ docker build -t registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia turris
+$ docker build --no-cache -t registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia turris
 $ docker push registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia
 ```
 
 Alternatively, provide `SDK_REPO` build arg (dir name from https://repo.turris.cz/ )
 
 ```
-$ docker build --build-arg SDK_REPO=omnia-nightly -t registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia-nightly turris
+$ docker build --no-cache --build-arg SDK_REPO=omnia-nightly -t registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia-nightly turris
 $ docker push registry.labs.nic.cz/knot/knot-resolver/ci/turris:omnia-nightly
 ```