add local pkgs source

build.containerfile

@@ -11,6 +11,9 @@ RUN install -m 6755 sudo /usr/local/bin/sudo
 FROM $arch/$image
 WORKDIR /tmp
 COPY debian-src.sources /etc/apt/sources.list.d/
+COPY local-pkgs.list /etc/apt/sources.list.d/
+COPY local-pkgs /etc/apt/preferences.d/
+RUN mkdir /pkgs && touch /pkgs/Packages
 COPY pkgs ./
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y build-essential ca-certificates debhelper devscripts git sudo yq $(awk '{ print $1 }' pkgs)
 RUN apt-mark hold $(awk '{ print $1 }' pkgs)

crossbuild.containerfile

@@ -20,6 +20,9 @@ RUN ./setup_native export $(sed 's/\$arch/'"$gnu_arch"'/' pkgs | awk '{ print $N
 FROM $target_arch/$image
 WORKDIR /tmp
 COPY debian-src.sources /etc/apt/sources.list.d/
+COPY local-pkgs.list /etc/apt/sources.list.d/
+COPY local-pkgs /etc/apt/preferences.d/
+RUN mkdir /pkgs && touch /pkgs/Packages
 COPY pkgs ./
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y build-essential ca-certificates debhelper devscripts git yq $(awk '{ print $1 }' pkgs)
 RUN apt-mark hold $(awk '{ print $1 }' pkgs)

local-pkgs

@@ -0,0 +1,3 @@
+Package: *
+Pin: origin ""
+Pin-Priority: 900

local-pkgs.list

@@ -0,0 +1 @@
+deb [trusted=yes] file:/pkgs /