fix: [docker-host] make ``apt-get update`` failure fatal, and deal with some known and fixable issues

precise/base-0k/hooks/install.d/00-base.sh

@@ -33,7 +33,58 @@ fi
 
 ## We can now do the ``apt-get update`` safely...
 
-apt-get update
+apt:update() {
+    tried=()
+    backup=
+
+    while ! out=$(apt-get update 2>&1); do
+        echo "Failed to 'apt-get update', looking for fixes..."
+        old_tried_length="${#tried[@]}"
+        failed_fetch=$(printf "%s" "$out" | egrep "^E: Failed to fetch .*404\s+Not Found")
+        failed_release=$(printf "%s" "$out" | egrep "^[EW]: The repository '.*' does (no longer|not) have a Release file.$")
+        if [[ " ${tried[*]} " != *" stretch-updates-fix "* ]] &&
+               [[ "$failed_fetch" == *" http://archive.debian.org/dists/stretch/updates/"* ]]; then
+            tried+=("stretch-updates-fix")
+            [ -z "$backup" ] && {
+                backup=1
+                echo "Backup old /etc/apt/sources.list"
+                cp -v /etc/apt/sources.list{,.myc-update}
+            }
+            echo "Applying stretch-updates-fix"
+            sed -ri 's%^(\s*deb(-src)? http://archive.debian.org/? stretch/updates .*)$%# \1%g' /etc/apt/sources.list
+        fi
+
+
+        if [[ " ${tried[*]} " != *" stretch-archive-fix "* ]] &&
+               [[ "$failed_release" == *"'http://deb.debian.org/debian stretch"* ]]; then
+            tried+=("stretch-archive-fix")
+            [ -z "$backup" ] && {
+                backup=1
+                echo "Backup old /etc/apt/sources.list"
+                cp -v /etc/apt/sources.list{,.myc-update}
+            }
+            echo "Applying stretch-archive-fix"
+            sed -i 's,http://deb.debian.org,http://archive.debian.org,g;
+         s,http://security.debian.org,http://archive.debian.org,g;
+         s,\(.*stretch-updates\),#\1,' \
+             /etc/apt/sources.list
+        fi
+
+        if [[ "$old_tried_length" == "${#tried[@]}" ]]; then
+            echo "Failing 'apt-get update'. Couldn't fix it automatically. Stopping."
+            if [ -n "$backup" ]; then
+                mv -v /etc/apt/sources.list{,.myc-update-fix}
+                mv -v /etc/apt/sources.list{.myc-update,}
+            fi
+            printf "%s\n" "$out" | sed -r 's/^/  | /g'
+            return 1
+        fi
+    done
+    echo "Successful 'apt-get update'."
+}
+
+apt:update || exit 1
+
 apt-get -y install bash-completion wget bzip2 git-core \
         less tmux mosh \
         sudo git vim file gawk </dev/null