build: Better dockerfile and python 3.11.15 (was 3.11.4)

Author: a.b.christie

Dockerfile

@@ -1,19 +1,16 @@
-FROM python:3.11.4-slim-bullseye
+FROM python:3.11.15-slim
 
 USER root
-RUN apt-get --allow-releaseinfo-change update && \
-    apt-get install -y \
+RUN apt-get --allow-releaseinfo-change update \
+    && apt-get install -y \
         git \
         libfontconfig1 \
         libsm6 \
         libxrender1 \
-        procps && \
-    pip install rdkit==2023.3.2 && \
-    git clone https://github.com/rdkit/mmpdb /usr/local/mmpdb && \
-    pip install /usr/local/mmpdb
-
-COPY requirements.txt ./
-RUN pip install -r requirements.txt
+        procps \
+    && pip install rdkit==2023.3.2 \
+    && git clone https://github.com/rdkit/mmpdb /usr/local/mmpdb \
+    && pip install /usr/local/mmpdb
 
 ADD . /usr/local/frag
 RUN pip install /usr/local/frag