Apply #262 to Python entrypoint

Works on a local/private docker image

python/entrypoint.sh

@@ -8,9 +8,13 @@ export INTERNAL_IP
 # Print current Python version
 python --version
 
-# Replace Startup Variables
-MODIFIED_STARTUP=$(echo -e $(echo -e ${STARTUP} | sed -e 's/{{/${/g' -e 's/}}/}/g'))
-echo -e ":/home/container$ ${MODIFIED_STARTUP}"
+# Convert all of the "{{VARIABLE}}" parts of the command into the expected shell
+# variable format of "${VARIABLE}" before evaluating the string and automatically
+# replacing the values.
+PARSED=$(echo "$STARTUP" | sed -e 's/{{/${/g' -e 's/}}/}/g')
 
-# Run the Server
-eval ${MODIFIED_STARTUP}
+# Display the command we're running in the output, and then execute it with eval
+printf "\033[1m\033[33mcontainer@pelican~ \033[0m"
+echo "$PARSED"
+# shellcheck disable=SC2086
+eval "$PARSED"