image-builder: accept any Slackware pkg extension (*.t?z) not just .txz

Upstream sbopkg ships as .tgz, not .txz. The require_pkgs guard, txz_hash
find, cp staging, and Dockerfile COPY all hard-coded *.txz, so a .tgz
package failed the presence check and was excluded from the rebuild hash.
Widen every glob to *.t?z (matches .txz/.tgz/.tbz/.tlz); stage the whole
pkgs dir into the image and installpkg the lot, dropping the in-image
extension coupling entirely.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2 files changed, 11 insertions, 10 deletions

diff --git a/.extras/image-builder/build-sbo-testbuild.sh b/.extras/image-builder/build-sbo-testbuild.sh
index e71e146..4364cd5 100755
--- a/.extras/image-builder/build-sbo-testbuild.sh
+++ b/.extras/image-builder/build-sbo-testbuild.sh
@@ -28,13 +28,13 @@ else
     BUILD_VARIANTS=("${VARIANTS[@]}")
 fi
 
-# Verify the required .txz are present before doing anything.
+# Verify the required packages (*.t?z) are present before doing anything.
 require_pkgs() {
     [[ -d "${PKGDIR}" ]] || _err "PKGDIR missing: ${PKGDIR}"
-    compgen -G "${PKGDIR}/sbopkg-*.txz" >/dev/null \
-        || _err "no sbopkg-*.txz in ${PKGDIR}"
-    compgen -G "${PKGDIR}/sbo-maintainer-tools-*.txz" >/dev/null \
-        || _err "no sbo-maintainer-tools-*.txz in ${PKGDIR}"
+    compgen -G "${PKGDIR}/sbopkg-*.t?z" >/dev/null \
+        || _err "no sbopkg-*.t?z in ${PKGDIR}"
+    compgen -G "${PKGDIR}/sbo-maintainer-tools-*.t?z" >/dev/null \
+        || _err "no sbo-maintainer-tools-*.t?z in ${PKGDIR}"
 }
 
 # needs_rebuild FULL_TAG TB_TAG PKGS_HASH -> 0 if rebuild needed
@@ -85,13 +85,13 @@ build_variant() {
     # shellcheck disable=SC2064
     trap "rm -rf '${WORKDIR}'" EXIT
     mkdir -p "${WORKDIR}/pkgs"
-    cp "${PKGDIR}"/sbopkg-*.txz "${PKGDIR}"/sbo-maintainer-tools-*.txz "${WORKDIR}/pkgs/"
+    cp "${PKGDIR}"/sbopkg-*.t?z "${PKGDIR}"/sbo-maintainer-tools-*.t?z "${WORKDIR}/pkgs/"
 
     cat > "${WORKDIR}/Dockerfile" <<DOCKERFILE
 FROM ${FULL_TAG}
 LABEL maintainer="danix <danix@danix.xyz>"
-COPY pkgs/*.txz /tmp/pkgs/
-RUN installpkg /tmp/pkgs/*.txz && rm -rf /tmp/pkgs
+COPY pkgs/ /tmp/pkgs/
+RUN installpkg /tmp/pkgs/* && rm -rf /tmp/pkgs
 RUN /sbin/ldconfig
 LABEL org.opencontainers.image.created="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
 LABEL org.opencontainers.image.title="SBo test-build env ${VERSION} (x86_64)"
diff --git a/.extras/image-builder/lib.sh b/.extras/image-builder/lib.sh
index 6cd9e4e..da12fd0 100644
--- a/.extras/image-builder/lib.sh
+++ b/.extras/image-builder/lib.sh
@@ -46,12 +46,13 @@ fetch() {
 }
 
 # txz_hash DIR
-# Stable hash of the set of .txz files in DIR (names + contents), order
+# Stable hash of the set of Slackware package files (*.t?z) in DIR (names +
+# contents), order
 # independent. Empty/absent dir -> empty string.
 txz_hash() {
     local dir="$1"
     [[ -d "$dir" ]] || { printf ''; return 0; }
-    local files; files=$(find "$dir" -maxdepth 1 -name '*.txz' -type f | sort)
+    local files; files=$(find "$dir" -maxdepth 1 -name '*.t?z' -type f | sort)
     [[ -n "$files" ]] || { printf ''; return 0; }
     # Hash sorted "name  sha256" lines so reordering does not change output.
     while IFS= read -r f; do