Fix selenium prodkeycloak-proxy

Addressed shellcheck warnings too

(cherry picked from commit d06c0f7)

Author: Zerpet

selenium/bin/components/prodkeycloak-proxy

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 HTTPD_DOCKER_IMAGE=${HTTPD_DOCKER_IMAGE:-httpd:latest}
 
 ensure_prodkeycloak-proxy() {
@@ -7,6 +9,7 @@ ensure_prodkeycloak-proxy() {
    start_prodkeycloak-proxy
  fi
 }
+
 init_prodkeycloak-proxy() {
   HTTPD_CONFIG_DIR=${TEST_CONFIG_DIR}/prodkeycloak-proxy
   PROXY_HOSTNAME=prodkeycloak-proxy 
@@ -17,6 +20,7 @@ init_prodkeycloak-proxy() {
   print "> PROXY_PORT: ${PROXY_PORT}"
 
   print "> HTTPD_DOCKER_IMAGE: ${HTTPD_DOCKER_IMAGE}"
+}
 
 start_prodkeycloak-proxy() {
   begin "Starting prodkeycloak-proxy ..."
@@ -26,18 +30,18 @@ start_prodkeycloak-proxy() {
 
   MOUNT_HTTPD_CONFIG_DIR=$CONF_DIR/httpd
 
-  mkdir -p $MOUNT_HTTPD_CONFIG_DIR
-  ${BIN_DIR}/gen-httpd-conf ${HTTPD_CONFIG_DIR} $ENV_FILE $MOUNT_HTTPD_CONFIG_DIR/httpd.conf
+  mkdir -p "$MOUNT_HTTPD_CONFIG_DIR"
+  "${BIN_DIR}/gen-httpd-conf" "${HTTPD_CONFIG_DIR}" "$ENV_FILE" "$MOUNT_HTTPD_CONFIG_DIR/httpd.conf"
   print "> EFFECTIVE HTTPD_CONFIG_FILE: $MOUNT_HTTPD_CONFIG_DIR/httpd.conf"
-  cp ${HTTPD_CONFIG_DIR}/.htpasswd $MOUNT_HTTPD_CONFIG_DIR
+  cp "${HTTPD_CONFIG_DIR}/.htpasswd" "$MOUNT_HTTPD_CONFIG_DIR"
 
   docker run \
     --detach \
     --name prodkeycloak-proxy \
-    --net ${DOCKER_NETWORK} \
+    --net "${DOCKER_NETWORK}" \
     --publish 9091:9091 \
     --mount "type=bind,source=${MOUNT_HTTPD_CONFIG_DIR},target=/usr/local/apache2/conf" \
-    ${HTTPD_DOCKER_IMAGE}
+    "${HTTPD_DOCKER_IMAGE}"
 
   wait_for_message prodkeycloak-proxy "initializing worker proxy:forward local"
   end "prodkeycloak-proxy is ready"