Update Dockerfile to Rust 1.75 and Debian Bookworm

In particular, Rust 1.75 this gives us the sparse registry, which helps
significantly speed up container builds.

The adduser command did have to be changed to groupadd/useradd, as it
seems the container no longer has adduser by default, and useradd is
more universal anyway.

Signed-off-by: Ryan Gonzalez <[email protected]>

Author: refi64

Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.64.0-slim-bullseye AS build
+FROM rust:1.75.0-slim-bookworm AS build
 ARG DEBIAN_FRONTEND=noninteractive
 
 ADD . /app
@@ -7,13 +7,17 @@ RUN apt-get update \
   && apt-get install -y pkg-config libssl-dev \
   && cargo build --release
 
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN adduser --uid 1001 --group --no-create-home --home /app obs-gitlab-runner
+RUN groupadd --gid 1001 obs-gitlab-runner \
+  && useradd \
+    --uid 1001 --gid 1001 \
+    --no-create-home --home-dir /app \
+    obs-gitlab-runner
 
 RUN apt-get update \
-  && apt-get install -y libssl1.1 ca-certificates \
+  && apt-get install -y libssl3 ca-certificates \
   && rm -rf /var/lib/apt/lists/
 COPY --from=build /app/target/release/obs-gitlab-runner /usr/local/bin/