fix(uid): set default container uid (#11) (#14)

(cherry picked from commit 7922337)

Co-authored-by: Andrew Azores <me@andrewazor.es>

Containerfile

@@ -1,6 +1,7 @@
 ARG builder_version=8.10
 ARG runner_version=8.10
 ARG goversion=go1.22.6
+ARG user_id=1001
 
 FROM registry.access.redhat.com/ubi8/ubi:$builder_version AS builder
 ARG goversion
@@ -11,5 +12,7 @@ RUN dnf install -y go \
     && ~/go/bin/$goversion build -a -v -x .
 
 FROM registry.access.redhat.com/ubi8/ubi-minimal:$runner_version
+ARG user_id
 COPY --from=builder ./oauth-proxy /usr/bin/oauth-proxy
+USER $user_id
 ENTRYPOINT ["/usr/bin/oauth-proxy"]

build.bash

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -xe
+
+DIR="$(dirname "$(readlink -f "$0")")"
+
+IMAGE_NAMESPACE="${IMAGE_NAMESPACE:-quay.io/cryostat}"
+IMAGE_NAME="${IMAGE_NAME:-openshift-oauth-proxy}"
+
+podman build -f "${DIR}/Containerfile" . -t "${IMAGE_NAMESPACE}/${IMAGE_NAME}:latest"
+
+for tag in $IMAGE_TAGS; do
+    podman tag "${IMAGE_NAMESPACE}/${IMAGE_NAME}:latest" "${IMAGE_NAMESPACE}/${IMAGE_NAME}:${tag}"
+done