feat(docker): improve dockerfile build (#220)

* refactor(docker): remove unnecessary root user

The USER root directive isn't needed directly after FROM

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* fix(docker): use generic nobody nogroup default instead of uid gid

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* fix(docker): build app from source locally instead of installing package

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* fix(docker): use correct files in dockerignore

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* chore(docker): dont install recommended packages with git

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* fix(docker): run apt as non-interactive

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>

* Update Dockerfile to new package structure, and fix streaming bugs.

---------

Signed-off-by: Sebastian Yaghoubi <sebastianyaghoubi@gmail.com>
Co-authored-by: afourney <adamfo@microsoft.com>

Dockerfile

@@ -1,22 +1,32 @@
 FROM python:3.13-slim-bullseye
 
-USER root
-
-ARG INSTALL_GIT=false
-RUN if [ "$INSTALL_GIT" = "true" ]; then \
-    apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*; \
-    fi
+ENV DEBIAN_FRONTEND=noninteractive
+ENV EXIFTOOL_PATH=/usr/bin/exiftool
+ENV FFMPEG_PATH=/usr/bin/ffmpeg
 
 # Runtime dependency
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ffmpeg \
-    && rm -rf /var/lib/apt/lists/*
+    exiftool
 
-RUN pip install markitdown
+ARG INSTALL_GIT=false
+RUN if [ "$INSTALL_GIT" = "true" ]; then \
+    apt-get install -y --no-install-recommends \
+    git; \
+    fi
+
+# Cleanup
+RUN rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY . /app
+RUN pip --no-cache-dir install \
+    /app/packages/markitdown[all] \
+    /app/packages/markitdown-sample-plugin
 
 # Default USERID and GROUPID
-ARG USERID=10000
-ARG GROUPID=10000
+ARG USERID=nobody
+ARG GROUPID=nogroup
 
 USER $USERID:$GROUPID