Another attempt

root/entrypoint.sh

@@ -1,11 +1,6 @@
 #!/bin/bash
 set -Eeo pipefail
 
-if [ ! -e /etc/openvpn/sshd_config ]; then
-    echo "Configuration file sshd_config not found. Initializing..."
-    cp /config/sshd_config /etc/ssh/sshd_config
-fi
-
 # shellcheck disable=2154
 trap 's=$?; echo "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
 
@@ -20,6 +15,14 @@ function log() {
     echo "[$0] $*" >&2
 }
 
+# Check that `sshd_config` exists
+# In case `/etc/ssh/` is mounted as a volume the file `sshd_config` is not
+# guaranteed to be there
+if [ ! -e /etc/ssh/sshd_config ]; then
+    echo "Configuration file sshd_config not found. Initializing..."
+    cp /config/sshd_config /etc/ssh/sshd_config
+fi
+
 # Allow running other programs, e.g. bash
 if [[ -z "$1" || "$1" =~ $reArgsMaybe ]]; then
     startSshd=true