fixed linting pt.1

Dockerfile

@@ -1,3 +1,4 @@
+# checkov:skip=CKV_DOCKER_2:Healthcheck instructions have not been added to container images
 # hadolint global ignore=DL3008
 
 ARG r=4.3.2

README.md

@@ -4,4 +4,4 @@
 
 This repository is managed in Terraform [here](https://github.com/ministryofjustice/data-platform-github-access/blob/main/terraform/github/analytical-platform-repositories.tf).
 
-This source had no README.
+This source had no README.

gather_env_vars.py

@@ -1,16 +1,19 @@
-import os
+import os  # pylint: disable=missing-module-docstring
 
 R_ENV_FILE_NAME = "/srv/shiny-server/.Renviron"
 R_ENV_FILE_NAME1 = "/home/shiny/.Renviron"
 
 
 def gather_env_vars_to_renv_file():
-    with open(R_ENV_FILE_NAME, "a") as file_handler:
+    """
+    Writes RENV files out.
+    """
+    with open(R_ENV_FILE_NAME, "a") as file_handler:  # pylint: disable=unspecified-encoding
         for name, value in os.environ.items():
             file_handler.write(f'{name}="{value}"')
             file_handler.write("\n")
 
-    with open(R_ENV_FILE_NAME1, "a") as file_handler:
+    with open(R_ENV_FILE_NAME1, "a") as file_handler:  # pylint: disable=unspecified-encoding
         for name, value in os.environ.items():
             file_handler.write(f'{name}="{value}"')
             file_handler.write("\n")

shiny-server.sh

@@ -4,10 +4,9 @@
 mkdir -p /var/log/shiny-server
 chown shiny.shiny /var/log/shiny-server
 
-if [ "$APPLICATION_LOGS_TO_STDOUT" != "false" ];
-then
-    # push the "real" application logs to stdout with xtail in detached mode
-    exec xtail /var/log/shiny-server/ &
+if [ "$APPLICATION_LOGS_TO_STDOUT" != "false" ]; then
+  # push the "real" application logs to stdout with xtail in detached mode
+  exec xtail /var/log/shiny-server/ &
 fi
 
 python3 ./gather_env_vars.py