diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index dc03e15..565a5fa 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -18,7 +18,15 @@
 	],
 
 	// Configure tool-specific properties.
-	// "customizations": {},
+	"customizations": {
+		"vscode":{
+			"extensions": [
+				"timonwong.shellcheck",
+				"GitHub.vscode-pull-request-github",
+				"charliermarsh.ruff"
+			]
+		}
+	},
 
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"
diff --git a/bin/lib.sh b/bin/lib.sh
index 930fff8..4478c7b 100644
--- a/bin/lib.sh
+++ b/bin/lib.sh
@@ -1,26 +1,28 @@
-DIRNAME=$(dirname `realpath $0`)
+#!/bin/bash
+DIRNAME=$(dirname $(realpath $0))
 PARENT_DIR=$DIRNAME/..
-PROJECT_DIR=`realpath $PARENT_DIR`
+PROJECT_DIR=$(realpath $PARENT_DIR)
 ENV_FILE=$PROJECT_DIR/.env
 
 if [ -f "$ENV_FILE" ]; then
-  . $ENV_FILE
+  # shellcheck source=lib.sh
+  . "$ENV_FILE"
 else
 echo "WARNING: File $ENV_FILE does not exist, relying on environment variables"
 fi
 
 check_environment_variables_defined () {
-  variable_not_set=0
-  for VARIABLE in "$@"; do
-      if [ -z "${!VARIABLE}" ]; then
-          echo "Environment variable $VARIABLE is not set"
-          variable_not_set=1
+    variable_not_set=0
+    for VARIABLE in "$@"; do
+        if [ -z "${!VARIABLE}" ]; then
+            echo "Environment variable $VARIABLE is not set"
+            variable_not_set=1
+        fi
+    done
+
+    if [ $variable_not_set -eq 1 ]; then
+        exit 1
     fi
-  done
-
-  if [ $variable_not_set -eq 1 ]; then
-    exit 1
-  fi
 }
 
 export PGOPTIONS="--search_path=$LOUIS_SCHEMA,public"
@@ -33,16 +35,17 @@ export PGHOST
 export PGPASSFILE
 export PGPASSWORD
 
-VERSION15=`psql --version | grep 15.`
+VERSION15=$(psql --version | grep 15.)
 
 if [ -z "$VERSION15" ]; then
     echo "postgresql-client-15 required"
     exit 1
 fi
 
-PSQL_ADMIN="psql -v ON_ERROR_STOP=1 --single-transaction -d $PGBASE"
-TODAY=`date +%Y-%m-%d`
+TODAY=$(date +%Y-%m-%d)
 
 if [ -z "$PGDUMP_FILENAME" ]; then
     PGDUMP_FILENAME=$PROJECT_DIR/dumps/$TODAY.$PGBASE.pg_dump
 fi
+
+export PSQL_ADMIN="psql -v ON_ERROR_STOP=1 --single-transaction -d $PGBASE"