[stack-base] update npm to build gitea

Use `debian-backports` to update npm from `5.8.0+ds6-4+deb10u2` to
`6.14.8+ds-1~bpo10+1`.

Why:
To help fix an issue encountered when building the `images/gitea.tar` artifact,
which was failing to build because of an npm install error.
See #4 for more information.

What/How:
Add backported packages from the debian-backports repository to build
with a newer version of npm.

Resolved issue by following the documented debian backport instructions:
https://backports.debian.org/Instructions/ and adding the repos to the
`update-packages.sh` script

NPM Package References:
- buster npm package: https://packages.debian.org/buster/npm
- buster-backports npm package: https://packages.debian.org/buster-backports/npm

Testing:
- clean images `rm -f images/*.tar`
- build image: `make images/gitea.tar`
- verify image builds :)

images/stack-base/Dockerfile

@@ -12,6 +12,8 @@ ADD files /
 
 RUN apt-install
 
+RUN apt update && apt-get -y -t buster-backports install "npm"
+
 RUN enable-faketime
 
 RUN useradd -ms /bin/bash build

images/stack-base/files/etc/apt/packages.list

@@ -1,9 +1,3 @@
-libpq5=11.9-0+deb10u1
-libpq-dev=11.9-0+deb10u1
-haskell-stack=1.7.1-3
-flex=2.6.4-6.2
-bison=2:3.3.2.dfsg-1
-musl-tools=1.1.21-2
 adduser=3.118
 apt=1.8.2.1
 autoconf=2.69-11
@@ -15,6 +9,7 @@ bash=5.0-4
 binutils=2.31.1-16
 binutils-common:amd64=2.31.1-16
 binutils-x86-64-linux-gnu=2.31.1-16
+bison=2:3.3.2.dfsg-1
 bsdutils=1:2.33.1-0.1
 build-essential=12.6
 bzip2=1.0.6-9.2~deb10u1
@@ -40,6 +35,7 @@ fakeroot=1.23-1
 fdisk=2.33.1-0.1
 file=1:5.35-4+deb10u1
 findutils=4.6.0+git+20190209-2
+flex=2.6.4-6.2
 g++=4:8.3.0-1
 g++-8=8.3.0-6
 gcc=4:8.3.0-1
@@ -70,6 +66,7 @@ gpgv=2.2.12-1+deb10u1
 grep=3.3-1
 gyp=0.1+20180428git4d467626-3
 gzip=1.9-3
+haskell-stack=1.7.1-3
 hostname=3.21
 init-system-helpers=1.56+nmu1
 iproute2=4.20.0-2
@@ -92,6 +89,7 @@ libattr1:amd64=1:2.4.48-4
 libaudit-common=1:2.8.4-3
 libaudit1:amd64=1:2.8.4-3
 libbinutils:amd64=2.31.1-16
+libbison-dev:amd64=2:3.3.2.dfsg-1
 libblkid1:amd64=2.33.1-0.1
 libbrotli1:amd64=1.0.7-2
 libbsd0:amd64=0.9.1-2
@@ -127,14 +125,18 @@ libfaketime:amd64=0.9.7-3
 libfdisk1:amd64=2.33.1-0.1
 libffi6:amd64=3.2.1-9
 libfile-fcntllock-perl=0.22-3+b5
+libfl-dev:amd64=2.6.4-6.2
+libfl2:amd64=2.6.4-6.2
 libgcc-8-dev:amd64=8.3.0-6
 libgcc1:amd64=1:8.3.0-6
 libgcrypt20:amd64=1.8.4-5
 libgdbm-compat4:amd64=1.18.1-4
 libgdbm6:amd64=1.18.1-4
 libglib2.0-0:amd64=2.58.3-2+deb10u2
 libglib2.0-data=2.58.3-2+deb10u2
+libgmp-dev:amd64=2:6.1.2+dfsg-4
 libgmp10:amd64=2:6.1.2+dfsg-4
+libgmpxx4ldbl:amd64=2:6.1.2+dfsg-4
 libgnutls30:amd64=3.6.7-4+deb10u5
 libgomp1:amd64=8.3.0-6
 libgpg-error0:amd64=1.35-1
@@ -175,8 +177,10 @@ libmodule-find-perl=0.13-1
 libmodule-scandeps-perl=1.27-1
 libmount1:amd64=2.33.1-0.1
 libmpc3:amd64=1.1.0-1
+libmpdec2:amd64=2.4.2-2
 libmpfr6:amd64=4.0.2-1
 libmpx2:amd64=8.3.0-6
+libncurses-dev:amd64=6.1+20181013-2+deb10u2
 libncurses6:amd64=6.1+20181013-2+deb10u2
 libncursesw6:amd64=6.1+20181013-2+deb10u2
 libnetfilter-conntrack3:amd64=1.0.7-1
@@ -200,15 +204,20 @@ libpam0g:amd64=1.3.1-5
 libpcre2-8-0:amd64=10.32-5
 libpcre3:amd64=2:8.39-12
 libperl5.28:amd64=5.28.1-6+deb10u1
+libpq-dev=11.9-0+deb10u1
+libpq5:amd64=11.9-0+deb10u1
 libproc-processtable-perl=0.56-1
 libpsl5:amd64=0.20.2-2
 libpython-stdlib:amd64=2.7.16-1
 libpython2-stdlib:amd64=2.7.16-1
 libpython2.7-minimal:amd64=2.7.16-2+deb10u1
 libpython2.7-stdlib:amd64=2.7.16-2+deb10u1
+libpython3-stdlib:amd64=3.7.3-1
+libpython3.7-minimal:amd64=3.7.3-2+deb10u2
+libpython3.7-stdlib:amd64=3.7.3-2+deb10u2
 libquadmath0:amd64=8.3.0-6
-libreadline7:amd64=7.0-5
 libreadline-dev:amd64=7.0-5
+libreadline7:amd64=7.0-5
 librtmp1:amd64=2.4+20151223.gitfa8646d.1-2
 libsasl2-2:amd64=2.1.27+dfsg-1+deb10u1
 libsasl2-modules:amd64=2.1.27+dfsg-1+deb10u1
@@ -248,6 +257,7 @@ libxext6:amd64=2:1.3.3-1+b2
 libxml2:amd64=2.9.4+dfsg1-7+b3
 libxmuu1:amd64=2:1.1.2-2+b3
 libxtables12:amd64=1.8.2-4
+libyaml-0-2:amd64=0.2.1-1
 libzstd1:amd64=1.3.8+dfsg-3
 linux-libc-dev:amd64=4.19.152-1
 login=1:4.5-1.1
@@ -527,7 +537,10 @@ python2-minimal=2.7.16-1
 python2.7=2.7.16-2+deb10u1
 python2.7-minimal=2.7.16-2+deb10u1
 python3=3.7.3-1
+python3-minimal=3.7.3-1
 python3-yaml=3.13-2
+python3.7=3.7.3-2+deb10u2
+python3.7-minimal=3.7.3-2+deb10u2
 readline-common=7.0-5
 runc=1.0.0~rc6+dfsg1-3
 sed=4.7-1

images/stack-base/files/etc/apt/sources.list

@@ -1,6 +1,8 @@
 deb http://deb.debian.org/debian buster main
-deb http://snapshot.debian.org/archive/debian/20201125T000000Z buster main
+deb http://snapshot.debian.org/archive/debian/20201129T000000Z buster main
 deb http://security.debian.org/debian-security buster/updates main
-deb http://snapshot.debian.org/archive/debian-security/20201125T000000Z buster/updates main
+deb http://snapshot.debian.org/archive/debian-security/20201129T000000Z buster/updates main
 deb http://deb.debian.org/debian buster-updates main
-deb http://snapshot.debian.org/archive/debian/20201125T000000Z buster-updates main
+deb http://snapshot.debian.org/archive/debian/20201129T000000Z buster-updates main
+deb http://deb.debian.org/debian buster-backports main
+deb http://snapshot.debian.org/archive/debian/20201129T000000Z buster-backports main

images/stack-base/files/usr/local/bin/update-packages

@@ -16,6 +16,8 @@ deb http://security.debian.org/debian-security buster/updates main
 deb http://snapshot.debian.org/archive/debian-security/${snapshot_date} buster/updates main
 deb http://deb.debian.org/debian buster-updates main
 deb http://snapshot.debian.org/archive/debian/${snapshot_date} buster-updates main
+deb http://deb.debian.org/debian buster-backports main
+deb http://snapshot.debian.org/archive/debian/${snapshot_date} buster-backports main
 EOF
 
 dpkg -l | awk '{ if ($1 == "ii") print $2 "=" $3 }' > /etc/apt/packages.list