[glib/wip/pwithnall/962-drop-embedded-pcre: 1/5] ci: Update Android and mingw CI images

[Philip Withnall <pwithnall src gnome org>]

commit 1602ca1d3ea18d771ac6c49ed2cb939376a7569d
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Jun 16 16:41:22 2021 +0100

    ci: Update Android and mingw CI images
    
    Fedora 29 is no longer available, and I need to rebuild these images so
    libpcre is pre-downloaded as a subproject.
    
    Update them to Fedora 31, which is what we use in `fedora.Dockerfile`.
    This should allow some blobs to be shared in the container repository.
    
    This isn’t the latest Fedora release, but I don’t want to go through the
    hassle of updating all the CI images to F33 right now in addition to
    updating the subproject caches.
    
    `python-unversioned-command` is needed because the Android NDK calls
    `python` without a version number. F29 must have installed this already.
    The Android NDK setup appears to be OK with Python 3.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Helps: #962

 .gitlab-ci/android-ndk.Dockerfile | 3 ++-
 .gitlab-ci/mingw.Dockerfile       | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci/android-ndk.Dockerfile b/.gitlab-ci/android-ndk.Dockerfile
index 56b186cbb..90b95826d 100644
--- a/.gitlab-ci/android-ndk.Dockerfile
+++ b/.gitlab-ci/android-ndk.Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:28
+FROM fedora:31
 
 RUN dnf -y install \
     autoconf \
@@ -44,6 +44,7 @@ RUN dnf -y install \
     ncurses-compat-libs \
     ninja-build \
     pcre-devel \
+    python-unversioned-command \
     python3 \
     python3-pip \
     python3-wheel \
diff --git a/.gitlab-ci/mingw.Dockerfile b/.gitlab-ci/mingw.Dockerfile
index d89de8cfb..2928b562c 100644
--- a/.gitlab-ci/mingw.Dockerfile
+++ b/.gitlab-ci/mingw.Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:29
+FROM fedora:31
 
 RUN dnf -y install \
     bindfs \