Disable a few commands for Docker. Currently this is done by monkeypatching the the `pihole` file on Docker install, however if someone was to run pihole checkout, these patches are removed.

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

pihole

@@ -23,6 +23,9 @@ source "${colfile}"
 utilsfile="${PI_HOLE_SCRIPT_DIR}/utils.sh"
 source "${utilsfile}"
 
+versionsfile="/etc/pihole/versions"
+source "${versionsfile}"
+
 webpageFunc() {
   source "${PI_HOLE_SCRIPT_DIR}/webpage.sh"
   main "$@"
@@ -63,14 +66,22 @@ arpFunc() {
 }
 
 updatePiholeFunc() {
-  shift
-  "${PI_HOLE_SCRIPT_DIR}"/update.sh "$@"
-  exit 0
+  if [ -n "${DOCKER_VERSION}" ]; then
+    unsupportedFunc
+  else
+    shift
+    "${PI_HOLE_SCRIPT_DIR}"/update.sh "$@"
+    exit 0
+  fi
 }
 
 reconfigurePiholeFunc() {
-  /etc/.pihole/automated\ install/basic-install.sh --reconfigure
-  exit 0;
+  if [ -n "${DOCKER_VERSION}" ]; then
+    unsupportedFunc
+  else
+    /etc/.pihole/automated\ install/basic-install.sh --reconfigure
+    exit 0;
+  fi
 }
 
 updateGravityFunc() {
@@ -91,8 +102,12 @@ chronometerFunc() {
 
 
 uninstallFunc() {
-  "${PI_HOLE_SCRIPT_DIR}"/uninstall.sh
-  exit 0
+  if [ -n "${DOCKER_VERSION}" ]; then
+    unsupportedFunc
+  else
+    "${PI_HOLE_SCRIPT_DIR}"/uninstall.sh
+    exit 0
+  fi
 }
 
 versionFunc() {
@@ -429,6 +444,11 @@ updateCheckFunc() {
   exit 0
 }
 
+unsupportedFunc(){
+  echo "Function not supported in Docker images"
+  exit 0
+}
+
 helpFunc() {
   echo "Usage: pihole [options]
 Example: 'pihole -w -h'