adelie-build-cd: Add MY_URL env var and document it

2 files changed, 9 insertions, 2 deletions

diff --git a/adelie-build-cd b/adelie-build-cd
index 56727c7..9d437e5 100755
--- a/adelie-build-cd
+++ b/adelie-build-cd
@@ -105,6 +105,7 @@ declare -r ARCH=${MY_ARCH:-$def_arch}
 declare -r LDARCH=${LDARCH:-$ARCH}
 declare -r PHASE=${MY_PHASE:-all}
 declare -r VERSION=${MY_VER:-$def_ver}
+declare -r URL=${MY_URL:-https://distfiles.adelielinux.org/adelie/$VERSION/}
 set +a
 
 ensure_commands
@@ -145,8 +146,8 @@ install_pkgs() {
 	mkdir -p squashroot-$ARCH/usr/sbin
 	cp addgroup adduser squashroot-$ARCH/usr/sbin/
 	apk --arch $ARCH \
-		-X "https://distfiles.adelielinux.org/adelie/$VERSION/system/$EXTRA_MIRROR" \
-		-X "https://distfiles.adelielinux.org/adelie/$VERSION/user/$EXTRA_MIRROR" \
+		-X "$URL/system/$EXTRA_MIRROR" \
+		-X "$URL/user/$EXTRA_MIRROR" \
 		-U --root squashroot-$ARCH --initdb add $PACKAGES $ARCH_PKGS
 }
 
diff --git a/adelie-build-cd.8 b/adelie-build-cd.8
index f174caf..802bd01 100644
--- a/adelie-build-cd.8
+++ b/adelie-build-cd.8
@@ -104,6 +104,12 @@ ld-musl-powerpc.so.1), you may specify the name of the ld architecture as
 For architectures that have subarchitectures (such as x86 with i486 and i525),
 you may specify the extra mirror directory to use as
 .Ev EXTRA_MIRROR .
+.It Ev Sy MY_URL
+Use a custom URL for downloading.  This does not change the URLs written to
+/etc/apk/repositories on the generated image.
+.Pp
+For instance, a speedy way to generate a testing ISO on a builder would be to
+specify MY_URL=/srv/packages.
 .El