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🔧 Fix apt sources.list for multi-arch Ubuntu 18.04 support 🔧

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- Replace sed-based old-releases redirect with architecture-aware mirror selection
- Use official archive.ubuntu.com for amd64/i386 and ports.ubuntu.com for other architectures
- Rewrite sources.list directly with explicit bionic, bionic-updates, bionic-backports, and bionic-security entries
- Ensures correct package sources are used without relying on old-releases fallback

Dockerfile.18.04
This commit is contained in:
Jason Hempstead
2026-05-04 12:52:42 -04:00
parent 28cfb2baa6
commit 66072331d9
1 changed files with 7 additions and 2 deletions
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Dockerfile.18.04
+7 -2
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@@ -83,8 +83,13 @@ RUN set -e; \
echo "Setting up prerequisites"; \
echo "$LANG UTF-8" >"/etc/locale.gen"; \
echo 'export DEBIAN_FRONTEND="'${DEBIAN_FRONTEND}'"' >"/etc/profile.d/apt.sh" && chmod 755 "/etc/profile.d/apt.sh"; \
sed -i 's|http://archive.ubuntu.com/ubuntu|http://old-releases.ubuntu.com/ubuntu|g' /etc/apt/sources.list || true; \
sed -i 's|http://security.ubuntu.com/ubuntu|http://old-releases.ubuntu.com/ubuntu|g' /etc/apt/sources.list || true; \
arch="$(dpkg --print-architecture)"; \
case "$arch" in amd64|i386) ubuntu_mirror="http://archive.ubuntu.com/ubuntu"; ubuntu_security="http://security.ubuntu.com/ubuntu" ;; *) ubuntu_mirror="http://ports.ubuntu.com/ubuntu-ports"; ubuntu_security="$ubuntu_mirror" ;; esac; \
printf '%s\n' \
"deb ${ubuntu_mirror} bionic main restricted universe multiverse" \
"deb ${ubuntu_mirror} bionic-updates main restricted universe multiverse" \
"deb ${ubuntu_mirror} bionic-backports main restricted universe multiverse" \
"deb ${ubuntu_security} bionic-security main restricted universe multiverse" > /etc/apt/sources.list; \
apt-get update && apt-get upgrade -yy && apt-get install -yy bash locales apt-utils; \
update-alternatives --install /bin/sh sh /bin/bash 1; \
update-alternatives --install /usr/bin/sh sh /bin/bash 1; \