✨(project) add bin/compose shortcut

When using raw docker-compose commands, the UID and GID environment
variables are supposed to be defined. Hence, to avoid having a warning
message (and potential errors), one should use the following command:

UID=$(id -u) GID=$(id -g) docker-compose

To ease our life, we've added a bin/compose script that can be used as a
shortcut for a configured docker-compose command.

bin/compose

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Only define UID & GID variables if they are not. Note that we cannot rely on
+# bash variable substitution default value as, when defined, the UID and GID
+# variables are read-only variables.
+if [[ -z ${UID} ]]; then
+    UID=$(id -u)
+fi
+
+if [[ -z ${GID} ]]; then
+    GID=$(id -g)
+fi
+
+export UID
+export GID
+
+docker-compose "${@}"