Address PR review feedback

script/docker/olcrtc-entrypoint.sh

@@ -0,0 +1,79 @@
+#!/bin/sh
+set -eu
+
+die() {
+    echo "olcrtc-entrypoint: $*" >&2
+    exit 1
+}
+
+bool_flag() {
+    case "${1:-}" in
+        1|true|TRUE|yes|YES|on|ON) return 0 ;;
+        *) return 1 ;;
+    esac
+}
+
+make_key() {
+    if command -v od >/dev/null 2>&1; then
+        od -An -N32 -tx1 /dev/urandom | tr -d ' \n'
+    else
+        hexdump -n 32 -e '32/1 "%02x"' /dev/urandom
+    fi
+}
+
+if [ "${1:-}" = "olcrtc" ]; then
+    shift
+fi
+
+if [ "$#" -gt 0 ]; then
+    exec /usr/local/bin/olcrtc "$@"
+fi
+
+mode="${OLCRTC_MODE:-srv}"
+room_id="${OLCRTC_ROOM_ID:-${ROOM_ID:-}}"
+provider="${OLCRTC_PROVIDER:-telemost}"
+data_dir="${OLCRTC_DATA_DIR:-/usr/share/olcrtc}"
+dns_server="${OLCRTC_DNS:-1.1.1.1:53}"
+key="${OLCRTC_KEY:-${KEY:-}}"
+key_file="${OLCRTC_KEY_FILE:-/var/lib/olcrtc/key.hex}"
+
+[ "$mode" = "srv" ] || die "server image defaults to OLCRTC_MODE=srv; got '$mode'"
+[ -n "$room_id" ] || die "set OLCRTC_ROOM_ID to the Telemost room id"
+
+if [ -z "$key" ]; then
+    if [ -s "$key_file" ]; then
+        key="$(tr -d '[:space:]' < "$key_file")"
+    else
+        key="$(make_key)"
+        umask 077
+        printf '%s\n' "$key" > "$key_file"
+        echo "olcrtc-entrypoint: generated encryption key and saved it to $key_file" >&2
+        echo "olcrtc-entrypoint: OLCRTC_KEY=$key" >&2
+    fi
+fi
+
+case "$key" in
+    *[!0-9a-fA-F]*)
+        die "OLCRTC_KEY must be a 64-character hex string"
+        ;;
+esac
+
+[ "${#key}" -eq 64 ] || die "OLCRTC_KEY must be 64 hex characters"
+
+set -- /usr/local/bin/olcrtc \
+    -mode "$mode" \
+    -provider "$provider" \
+    -id "$room_id" \
+    -key "$key" \
+    -data "$data_dir" \
+    -dns "$dns_server"
+
+if bool_flag "${OLCRTC_DUO:-}"; then
+    set -- "$@" -duo
+fi
+
+if bool_flag "${OLCRTC_DEBUG:-}"; then
+    set -- "$@" -debug
+fi
+
+exec "$@"

script/docker/olcrtc-healthcheck.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -eu
+
+exe="$(readlink /proc/1/exe 2>/dev/null || true)"
+case "$exe" in
+    */olcrtc) exit 0 ;;
+    *) exit 1 ;;
+esac