build: always try to pull a newer build image

.drone.yml

@@ -18,12 +18,14 @@ volumes:
 steps:
   - name: generate control
     image: debian:bookworm
+    pull: always
     commands:
       - apt-get -qy update && apt-get -qy install git
       - scripts/generate_control.sh
 
   - name: build amd64
     image: quay.io/buildah/stable
+    pull: always
     privileged: true
     volumes:
     - name: fedhq-ca-crt
@@ -53,12 +55,14 @@ volumes:
 steps:
   - name: generate control
     image: debian:bookworm
+    pull: always
     commands:
       - apt-get -qy update && apt-get -qy install git
       - scripts/generate_control.sh
 
   - name: build arm64
     image: quay.io/buildah/stable
+    pull: always
     privileged: true
     volumes:
     - name: fedhq-ca-crt
@@ -75,7 +79,7 @@ node_selector:
   kubernetes.io/arch: amd64
   federationhq.de/location: Blumendorf
   federationhq.de/compute: true
-      
+
 volumes:
 - name: fedhq-ca-crt
   config_map:
@@ -86,6 +90,7 @@ volumes:
 steps:
   - name: push
     image: quay.io/buildah/stable
+    pull: always
     privileged: true
     volumes:
     - name: fedhq-ca-crt