diff --git a/docker-compose.yaml b/docker-compose.yaml
index bae645fe..72e92098 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,3 +1,4 @@
+# Copy docker/example.env to .env and set MAIL_DOMAIN before starting.
 services:
   chatmail:
     build:
diff --git a/docker/cm_ini_to_env.py b/docker/cm_ini_to_env.py
deleted file mode 100755
index fcb2c576..00000000
--- a/docker/cm_ini_to_env.py
+++ /dev/null
@@ -1,84 +0,0 @@
-#!/usr/bin/env python3
-"""Convert a chatmail.ini to a Docker .env file.
-
-Usage: python docker/cm_ini_to_env.py [chatmail.ini] [.env]
-
-Reads the ini file, extracts all non-default key=value pairs,
-and writes them as UPPER_CASE env vars suitable for docker-compose.
-"""
-
-import configparser
-import sys
-from pathlib import Path
-
-# Keys that only make sense for bare-metal deploys or are handled
-# separately by the Docker setup and should not appear in .env.
-SKIP_KEYS = set()
-
-# Keys that exist in .env but have a different name than the ini key.
-# ini_key -> env_key
-RENAMES = {}
-
-
-def read_ini(path):
-    """Return dict of key=value from [params] section."""
-    cp = configparser.ConfigParser()
-    cp.read(path)
-    if not cp.has_section("params"):
-        sys.exit(f"Error: {path} has no [params] section")
-    return dict(cp.items("params"))
-
-
-def read_defaults():
-    """Return dict of default values from the ini template."""
-    template = Path(__file__).resolve().parent.parent / "chatmaild/src/chatmaild/ini/chatmail.ini.f"
-    if not template.exists():
-        return {}
-    cp = configparser.ConfigParser()
-    cp.read(template)
-    if not cp.has_section("params"):
-        return {}
-    defaults = {}
-    for key, value in cp.items("params"):
-        # Template placeholders like {mail_domain} aren't real defaults.
-        if "{" not in value:
-            defaults[key] = value
-    return defaults
-
-
-def ini_to_env(ini_path, only_non_default=True):
-    """Yield (ENV_KEY, value) pairs from an ini file."""
-    params = read_ini(ini_path)
-    defaults = read_defaults() if only_non_default else {}
-
-    for key, value in sorted(params.items()):
-        if key in SKIP_KEYS:
-            continue
-        if only_non_default and key in defaults and value.strip() == defaults[key].strip():
-            continue
-        env_key = RENAMES.get(key, key.upper())
-        yield env_key, value.strip()
-
-
-def main():
-    ini_path = sys.argv[1] if len(sys.argv) > 1 else "chatmail.ini"
-    env_path = sys.argv[2] if len(sys.argv) > 2 else None
-
-    if not Path(ini_path).exists():
-        sys.exit(f"Error: {ini_path} not found")
-
-    lines = []
-    for env_key, value in ini_to_env(ini_path):
-        lines.append(f'{env_key}="{value}"')
-
-    output = "\n".join(lines) + "\n"
-
-    if env_path:
-        Path(env_path).write_text(output)
-        print(f"Wrote {len(lines)} variables to {env_path}")
-    else:
-        print(output, end="")
-
-
-if __name__ == "__main__":
-    main()
diff --git a/docker/files/setup_chatmail_docker.sh b/docker/files/setup_chatmail_docker.sh
index 398873a6..d863a836 100755
--- a/docker/files/setup_chatmail_docker.sh
+++ b/docker/files/setup_chatmail_docker.sh
@@ -53,7 +53,7 @@ mkdir -p "$(dirname "$CHATMAIL_INI")"
 $CMDEPLOY init --config "$CHATMAIL_INI" $MAIL_DOMAIN || true
 
 export CMDEPLOY_STAGES="${CMDEPLOY_STAGES:-configure,activate}"
-$CMDEPLOY run --ssh-host @docker
+$CMDEPLOY run --config "$CHATMAIL_INI" --ssh-host @docker
 
 echo "ForwardToConsole=yes" >> /etc/systemd/journald.conf
 systemctl restart systemd-journald
diff --git a/docker/files/update_ini.sh b/docker/files/update_ini.sh
deleted file mode 100644
index c5d65661..00000000
--- a/docker/files/update_ini.sh
+++ /dev/null
@@ -1,79 +0,0 @@
-#!/bin/bash
-set -eo pipefail
-
-INI_FILE="${INI_FILE:-chatmail.ini}"
-
-if [ ! -f "$INI_FILE" ]; then
-    echo "Error: file $INI_FILE not found." >&2
-    exit 1
-fi
-
-TMP_FILE="$(mktemp)"
-
-convert_to_bytes() {
-    local value="$1"
-    if [[ "$value" =~ ^([0-9]+)([KkMmGgTt])$ ]]; then
-        local num="${BASH_REMATCH[1]}"
-        local unit="${BASH_REMATCH[2]}"
-        case "$unit" in
-            [Kk]) echo $((num * 1024)) ;;
-            [Mm]) echo $((num * 1024 * 1024)) ;;
-            [Gg]) echo $((num * 1024 * 1024 * 1024)) ;;
-            [Tt]) echo $((num * 1024 * 1024 * 1024 * 1024)) ;;
-        esac
-    elif [[ "$value" =~ ^[0-9]+$ ]]; then
-        echo "$value"
-    else
-        echo "Error: incorrect size format: $value." >&2
-        return 1
-    fi
-}
-
-process_specific_params() {
-    local key=$1
-    local value=$2
-    local destination_file=$3
-
-    if [[ "$key" == "max_message_size" ]]; then
-        converted=$(convert_to_bytes "$value") || exit 1
-        if grep -q -e "## .* = .* bytes" "$destination_file"; then 
-            sed "s|## .* = .* bytes|## $value = $converted bytes|g" "$destination_file";
-        else
-            echo "## $value = $converted bytes"  >> "$destination_file"
-        fi
-        echo "$key = $converted" >> "$destination_file"
-    else
-        echo "$key = $value" >> "$destination_file"
-    fi
-}
-
-while IFS= read -r line; do
-    if [[ "$line" =~ ^[[:space:]]*#.* || "$line" =~ ^[[:space:]]*$ ]]; then
-        echo "$line" >> "$TMP_FILE"
-        continue
-    fi
-
-    if [[ "$line" =~ ^([a-z0-9_]+)[[:space:]]*=[[:space:]]*(.*)$ ]]; then
-        key="${BASH_REMATCH[1]}"
-        current_value="${BASH_REMATCH[2]}"
-        env_var_name=$(echo "$key" | tr 'a-z' 'A-Z')
-        env_value="${!env_var_name}"
-
-        if [[ -n "$env_value" ]]; then
-            process_specific_params "$key" "$env_value" "$TMP_FILE"
-        else
-            echo "$line" >> "$TMP_FILE"
-        fi
-    else
-        echo "$line" >> "$TMP_FILE"
-    fi
-done < "$INI_FILE"
-
-PERMS=$(stat -c %a "$INI_FILE")
-OWNER=$(stat -c %u "$INI_FILE")
-GROUP=$(stat -c %g "$INI_FILE")
-
-chmod "$PERMS" "$TMP_FILE"
-chown "$OWNER":"$GROUP" "$TMP_FILE"
-
-mv "$TMP_FILE" "$INI_FILE"