Add TLS functionality from env variables (#1227)

* Add TLS functionality settings from env variables

docker/README.md

@@ -123,6 +123,9 @@ Using binds rather than named volumes ([more explanation here](https://docs.dock
 * `LEVEL_TRACE`             - Trace-level (VERY verbose) on stdout (default: `false`) : `-e LEVEL_TRACE="<true|false>"`
 * `LEVEL_DEBUG`             - Debug-level on stdout (default: `false`) : `-e LEVEL_DEBUG="<true|false>"`
 * `LEVEL_INFO`              - Info-level on stdout (default: `false`) : `-e LEVEL_INFO="<true|false>"`
+* `USE_TLS`                 - Enable TLS on the API Server (default: `false`) : `-e USE_TLS="<true|false>"`
+* `CERT_FILE`               - TLS Certificate file (default: `/etc/ssl/cert.pem`) : `-e CERT_FILE="<file_path>"`
+* `KEY_FILE`                - TLS Key file (default: `/etc/ssl/key.pem`) : `-e KEY_FILE="<file_path>"`
 * `CUSTOM_HOSTNAME`         - Custom hostname for local api (default: `localhost`) : `-e CUSTOM_HOSTNAME="<hostname>"`
 
 ## Volumes

docker/docker_start.sh

@@ -6,6 +6,10 @@ if [ "$CONFIG_FILE" != "" ]; then
     CS_CONFIG_FILE="$CONFIG_FILE"
 fi
 
+# TLS defaults
+CERT_FILE="${CERT_FILE:-/etc/ssl/cert.pem}"
+KEY_FILE="${KEY_FILE:-/etc/ssl/key.pem}"
+
 #Check & prestage databases
 if [ ! -e "/var/lib/data/GeoLite2-ASN.mmdb" ] && [ ! -e "/var/lib/data/GeoLite2-City.mmdb" ]; then
     mkdir -p /var/lib/crowdsec/data
@@ -64,6 +68,12 @@ if [ "$GID" != "" ]; then
     fi
 fi
 
+if [ "$USE_TLS" != "" ]; then
+   yq -i eval ".api.server.tls.cert_file = \"$CERT_FILE\"" "$CS_CONFIG_FILE"
+   yq -i eval ".api.server.tls.key_file = \"$KEY_FILE\"" "$CS_CONFIG_FILE"
+   yq -i eval '... comments=""' "$CS_CONFIG_FILE"
+fi
+
 ## Install collections, parsers & scenarios
 cscli -c "$CS_CONFIG_FILE" hub update
 cscli -c "$CS_CONFIG_FILE" collections upgrade crowdsecurity/linux || true