Updates release guide Docker example (#5729)

guides/deployment/releases.md

@@ -158,23 +158,22 @@ Elixir releases work well with container technologies, such as Docker. The idea
 If you call `mix phx.gen.release --docker` you'll see a new file with these contents:
 
 ```Dockerfile
-# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian instead of
-# Alpine to avoid DNS resolution issues in production.
+# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
+# instead of Alpine to avoid DNS resolution issues in production.
 #
 # https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
 # https://hub.docker.com/_/ubuntu?tab=tags
 #
-#
 # This file is based on these images:
 #
 #   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
-#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image
+#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20230612-slim - for the release image
 #   - https://pkgs.org/ - resource for finding needed packages
-#   - Ex: hexpm/elixir:1.14.0-erlang-24.3.4-debian-bullseye-20210902-slim
+#   - Ex: hexpm/elixir:1.14.5-erlang-25.3.2.4-debian-bullseye-20230612-slim
 #
-ARG ELIXIR_VERSION=1.14.0
-ARG OTP_VERSION=24.3.4
-ARG DEBIAN_VERSION=bullseye-20210902-slim
+ARG ELIXIR_VERSION=1.14.5
+ARG OTP_VERSION=25.3.2.4
+ARG DEBIAN_VERSION=bullseye-20230612-slim
 
 ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
 ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
@@ -208,18 +207,14 @@ RUN mix deps.compile
 
 COPY priv priv
 
-# note: if your project uses a tool like https://purgecss.com/,
-# which customizes asset compilation based on what it finds in
-# your Elixir templates, you will need to move the asset compilation
-# step down so that `lib` is available.
+COPY lib lib
+
 COPY assets assets
 
 # compile assets
 RUN mix assets.deploy
 
 # Compile the release
-COPY lib lib
-
 RUN mix compile
 
 # Changes to config/runtime.exs don't require recompiling the code
@@ -232,7 +227,8 @@ RUN mix release
 # the compiled release and other runtime necessities
 FROM ${RUNNER_IMAGE}
 
-RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \
+RUN apt-get update -y && \
+  apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
   && apt-get clean && rm -f /var/lib/apt/lists/*_*
 
 # Set the locale
@@ -258,7 +254,7 @@ USER nobody
 # above and adding an entrypoint. See https://github.com/krallin/tini for details
 # ENTRYPOINT ["/tini", "--"]
 
-CMD /app/bin/server
+CMD ["/app/bin/server"]
 ```
 
 Where `my_app` is the name of your app. At the end, you will have an application in `/app` ready to run as `/app/bin/server`.