Don't cache Docker builds when they use git clone

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

roles/openshift-apps/fasjson/templates/Dockerfile

@@ -28,8 +28,6 @@ RUN dnf install -y \
         python3-wheel && \
     dnf autoremove -y && \
     dnf clean all -y
-# Run a command with random content to prevent Docker from caching the git clone step.
-RUN echo {{ now() }}
 RUN git clone https://github.com/fedora-infra/fasjson.git && \
     pushd fasjson && \
     git checkout {{ (env == 'production')|ternary('stable', 'staging') }} && \

roles/openshift-apps/fasjson/templates/buildconfig.yml

@@ -14,6 +14,9 @@ spec:
       {{ load_file('Dockerfile') | indent(6) }}
   strategy:
     type: Docker
+    dockerStrategy:
+      # Prevent Docker from caching the git clone step in the Dockerfile
+      noCache: true
   output:
     to:
       kind: ImageStreamTag

roles/openshift-apps/ipsilon/templates/buildconfig.yml

@@ -13,6 +13,9 @@ spec:
       {{ load_file('Dockerfile') | indent(6) }}
   strategy:
     type: Docker
+    dockerStrategy:
+      # Prevent Docker from caching the git clone step in the Dockerfile
+      noCache: true
   output:
     to:
       kind: ImageStreamTag