Build ircbots with base python image from quay.io

The parent change moves the publication of base python images to
quay.io. Update the irc bot container images to pull the base python
iamges from quay.io to match.

We switch to building with docker now that docker is capable of
building with speculative images in single arch builds.

Change-Id: I5040582cf5039d3f51432c35aa7bd172cbb86aca

docker/accessbot/Dockerfile

@@ -15,7 +15,7 @@
 
 # Trigger rebuild - Thu Aug  7 05:51:27 PM UTC 2025
 
-FROM docker.io/opendevorg/python-base:3.12-bookworm
+FROM quay.io/opendevorg/python-base:3.12-bookworm
 
 RUN pip install pyyaml irc
 COPY accessbot.py /usr/local/bin/accessbot.py

docker/ircbot/Dockerfile

@@ -15,7 +15,7 @@
 
 # Trigger rebuild - Thu Aug  7 05:51:27 PM UTC 2025
 
-FROM docker.io/opendevorg/python-builder:3.12-bookworm as builder
+FROM quay.io/opendevorg/python-builder:3.12-bookworm as builder
 ARG ZUUL_SIBLINGS=""
 
 RUN apt-get update \
@@ -27,7 +27,7 @@ COPY . /tmp/src
 
 RUN assemble
 
-FROM docker.io/opendevorg/python-base:3.12-bookworm as ircbot
+FROM quay.io/opendevorg/python-base:3.12-bookworm as ircbot
 
 COPY --from=builder /output /output
 

docker/matrix-eavesdrop/Dockerfile

@@ -15,12 +15,12 @@
 
 # Trigger rebuild - Thu Aug  7 05:51:27 PM UTC 2025
 
-FROM docker.io/opendevorg/python-builder:3.12-bookworm as builder
+FROM quay.io/opendevorg/python-builder:3.12-bookworm as builder
 
 COPY src /tmp/src
 RUN assemble
 
-FROM docker.io/opendevorg/python-base:3.12-bookworm as eavesdrop
+FROM quay.io/opendevorg/python-base:3.12-bookworm as eavesdrop
 
 COPY --from=builder /output/ /output
 RUN /output/install-from-bindep \

zuul.d/docker-images/accessbot.yaml

@@ -7,6 +7,7 @@
     provides: accessbot-container-image
     vars: &accessbot_vars
       promote_container_image_job: system-config-upload-image-accessbot
+      container_command: docker
       container_images:
         - context: docker/accessbot
           registry: quay.io

zuul.d/docker-images/eavesdrop.yaml

@@ -9,6 +9,7 @@
     provides: matrix-eavesdrop-container-image
     vars: &matrix-eavesdrop_vars
       promote_container_image_job: system-config-upload-image-matrix-eavesdrop
+      container_command: docker
       container_images:
         - context: docker/matrix-eavesdrop
           registry: quay.io

zuul.d/docker-images/ircbot.yaml

@@ -11,6 +11,7 @@
       - opendev/meetbot
     vars: &ircbot_vars
       promote_container_image_job: system-config-upload-image-ircbot
+      container_command: docker
       container_images:
         - context: docker/ircbot
           target: ircbot