[xen staging] CI: Adjust the usage of inline files

[patchbot@xxxxxxx]

commit 7878756565427b310b0307c0aa3f6d682133e1d1
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Wed Jul 3 14:08:29 2024 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Jul 4 19:07:35 2024 +0100

    CI: Adjust the usage of inline files
    
    As per:
    
      
https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/reference.md#here-documents
    
    For inline files, use COPY with a heredoc, rather than opencoding it through
    /bin/sh.
    
    No practical change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 automation/build/debian/jessie-i386.dockerfile  | 2 +-
 automation/build/debian/jessie.dockerfile       | 2 +-
 automation/build/debian/stretch-i386.dockerfile | 2 +-
 automation/build/debian/stretch.dockerfile      | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/automation/build/debian/jessie-i386.dockerfile 
b/automation/build/debian/jessie-i386.dockerfile
index f6eaa94ee5..1eb7ff11c7 100644
--- a/automation/build/debian/jessie-i386.dockerfile
+++ b/automation/build/debian/jessie-i386.dockerfile
@@ -12,7 +12,7 @@ WORKDIR /build
 ENTRYPOINT ["linux32"]
 
 # replace repos in archive as release is EOL
-RUN cat <<"END" > /etc/apt/sources.list
+COPY <<"END" /etc/apt/sources.list
 deb http://archive.debian.org/debian/ jessie main contrib non-free
 deb http://archive.debian.org/debian/ jessie-backports main contrib non-free
 deb http://archive.debian.org/debian-security/ jessie/updates main contrib 
non-free
diff --git a/automation/build/debian/jessie.dockerfile 
b/automation/build/debian/jessie.dockerfile
index a870e743fc..4c0ffe66f8 100644
--- a/automation/build/debian/jessie.dockerfile
+++ b/automation/build/debian/jessie.dockerfile
@@ -10,7 +10,7 @@ RUN mkdir /build
 WORKDIR /build
 
 # replace repos in archive as release is EOL
-RUN cat <<"END" > /etc/apt/sources.list
+COPY <<"END" /etc/apt/sources.list
 deb http://archive.debian.org/debian/ jessie main contrib non-free
 deb http://archive.debian.org/debian/ jessie-backports main contrib non-free
 deb http://archive.debian.org/debian-security/ jessie/updates main contrib 
non-free
diff --git a/automation/build/debian/stretch-i386.dockerfile 
b/automation/build/debian/stretch-i386.dockerfile
index ad8db692aa..8ec9c3a246 100644
--- a/automation/build/debian/stretch-i386.dockerfile
+++ b/automation/build/debian/stretch-i386.dockerfile
@@ -12,7 +12,7 @@ WORKDIR /build
 ENTRYPOINT ["linux32"]
 
 # replace repos in archive as release is EOL
-RUN cat <<"END" > /etc/apt/sources.list
+COPY <<"END" /etc/apt/sources.list
 deb http://archive.debian.org/debian/ stretch main contrib non-free
 deb http://archive.debian.org/debian/ stretch-backports main contrib non-free
 deb http://archive.debian.org/debian-security/ stretch/updates main contrib 
non-free
diff --git a/automation/build/debian/stretch.dockerfile 
b/automation/build/debian/stretch.dockerfile
index 4dfd40b542..2db4552662 100644
--- a/automation/build/debian/stretch.dockerfile
+++ b/automation/build/debian/stretch.dockerfile
@@ -10,7 +10,7 @@ RUN mkdir /build
 WORKDIR /build
 
 # replace repos in archive as release is EOL
-RUN cat <<"END" > /etc/apt/sources.list
+COPY <<"END" /etc/apt/sources.list
 deb http://archive.debian.org/debian/ stretch main contrib non-free
 deb http://archive.debian.org/debian/ stretch-backports main contrib non-free
 deb http://archive.debian.org/debian-security/ stretch/updates main contrib 
non-free
--
generated by git-patchbot for /home/xen/git/xen.git#staging