fix: [docker-host] use 'python3' as 'python' executable if missing

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

@@ -60,6 +60,16 @@ case $(lsb_release -is) in
         fi
         sed -ri 's/^\s*#\s*(en_US\.UTF-?8.*)\s*$/\1/g' /etc/locale.gen
         locale-gen
+
+        ## Debian11 doesn't have a 'python' executable but only a
+        ## 'python3' executable some python script don't care about
+        ## the version, they just want a 'python' executable.
+        if ! type -p python >/dev/null 2>&1; then
+            if py3=$(type -p python3); then
+                echo "No 'python' available in \$PATH, but 'python3' found, using it." >&2
+                ln -svf "$py3" /usr/local/bin/python
+            fi
+        fi
         ;;
 esac