Dockerfile should source environment for global defaults

[achave11-ucsc]

Index: Dockerfile
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/Dockerfile b/Dockerfile
--- a/Dockerfile	(revision 0b645c411a921d33cc31bc8a9068f6600752e16c)
+++ b/Dockerfile	(date 1736799217418)
@@ -64,15 +64,16 @@
 #
 RUN mkdir /build
 WORKDIR /build
-ENV project_root=/build
+#ENV project_root=/build
 
 # Install Azul dependencies
 #
 ARG PIP_DISABLE_PIP_VERSION_CHECK
 ENV PIP_DISABLE_PIP_VERSION_CHECK=${PIP_DISABLE_PIP_VERSION_CHECK}
-COPY requirements*.txt common.mk Makefile ./
+COPY environment requirements*.txt common.mk Makefile ./
 ARG make_target
-RUN make virtualenv \
+RUN source environment \
+    && make virtualenv \
     && source .venv/bin/activate \
     && make $make_target \
     && rm requirements*.txt common.mk Makefile
Index: .dockerignore
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/.dockerignore b/.dockerignore
--- a/.dockerignore	(revision 0b645c411a921d33cc31bc8a9068f6600752e16c)
+++ b/.dockerignore	(date 1736799425884)
@@ -2,6 +2,7 @@
 !Makefile
 !common.mk
 !requirements*.txt
+!environment
 !bin/keys/docker-apt-keyring.pgp
 # FIXME: Remove fips_enabled
 #        https://github.com/DataBiosphere/azul/issues/6675