Docker: Add experimental develop:bullseye-slim image for testing

Makefile

@@ -241,6 +241,10 @@ docker-develop-bullseye:
 	docker pull --platform=amd64 golang:bullseye
 	docker pull --platform=arm64 golang:bullseye
 	scripts/docker/buildx-multi.sh develop linux/amd64,linux/arm64 bullseye /bullseye "-t photoprism/develop:latest"
+docker-develop-bullseye-slim:
+	docker pull --platform=amd64 debian:bullseye-slim
+	docker pull --platform=arm64 debian:bullseye-slim
+	scripts/docker/buildx-multi.sh develop linux/amd64,linux/arm64 bullseye-slim /bullseye-slim
 docker-develop-armv7:
 	docker pull --platform=arm debian:bullseye-slim
 	scripts/docker/buildx.sh develop linux/arm armv7 /armv7

docker/develop/bullseye-slim/Dockerfile

@@ -0,0 +1,68 @@
+#### Base Image: Debian 11, Codename "Bullseye"
+FROM debian:bullseye-slim
+
+LABEL maintainer="Michael Mayer <hello@photoprism.app>"
+
+ARG TARGETARCH
+ARG BUILD_TAG
+
+# set environment variables, see https://docs.photoprism.app/getting-started/config-options/
+ENV DOCKER_ARCH=$TARGETARCH \
+    DOCKER_TAG=$BUILD_TAG \
+    DOCKER_ENV="develop" \
+    PATH="/opt/photoprism/bin:/opt/photoprism/scripts:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin" \
+    TMPDIR="/tmp" \
+    DEBIAN_FRONTEND="noninteractive" \
+    TF_CPP_MIN_LOG_LEVEL="2"
+
+# copy scripts and debian backports sources list
+COPY /scripts/dist/ /opt/photoprism/scripts
+COPY /docker/develop/bullseye/backports.list /etc/apt/sources.list.d/backports.list
+
+# install additional distribution packages
+RUN echo 'Acquire::Retries "10";' > /etc/apt/apt.conf.d/80retry && \
+    echo 'APT::Install-Recommends "false";' > /etc/apt/apt.conf.d/80recommends && \
+    echo 'APT::Install-Suggests "false";' > /etc/apt/apt.conf.d/80suggests && \
+    echo 'APT::Get::Assume-Yes "true";' > /etc/apt/apt.conf.d/80forceyes && \
+    echo 'APT::Get::Fix-Missing "true";' > /etc/apt/apt.conf.d/80fixmissing && \
+    useradd -m -U -u 1000 -d /photoprism photoprism && \
+    apt-get update && apt-get -qq dist-upgrade && apt-get -qq install --no-install-recommends \
+      ca-certificates \
+      gpg \
+      wget \
+      curl \
+      make \
+      sqlite3 \
+      tzdata \
+      libc6 \
+      libatomic1 \
+      libheif-examples \
+      librsvg2-bin \
+      exiftool \
+      rawtherapee \
+      ffmpeg \
+      ffmpegthumbnailer \
+      libavcodec-extra && \
+    install-mariadb.sh mariadb-client && \
+    install-darktable.sh && \
+    install -d -m 0777 -o 1000 -g 1000 \
+      /var/lib/photoprism \
+      /tmp/photoprism \
+      /photoprism/originals \
+      /photoprism/import \
+      /photoprism/storage \
+      /photoprism/storage/sidecar \
+      /photoprism/storage/albums \
+      /photoprism/storage/backups \
+      /photoprism/storage/config \
+      /photoprism/storage/cache && \
+    cleanup.sh
+
+# define default directory and user
+WORKDIR /photoprism
+
+# expose default http port 2342
+EXPOSE 2342
+
+# keep container running
+CMD ["tail", "-f", "/dev/null"]