Parallelize client and server builds in dockerfile

.dockerignore

@@ -1,2 +1,3 @@
+.k8s_ci.Dockerfile
 .venv
 database

.k8s_ci.Dockerfile

@@ -1,12 +1,18 @@
 # Stage 1:
 # - base: ubuntu (default) OR prebuilt image0
 # - install build tools
-# - run playbook (image0 avoids rerunning lengthy tasks)
+# - clone playbook
+# Stage 2: build galaxy client and server in parallel
+# Stage 2.1:
+# - run playbook with server build steps only
 # - remove build artifacts + files not needed in container
-# Stage 2:
+# Stage 2.2:
+# - run playbook with client build steps only
+# - remove build artifacts + files not needed in container
+# Stage 3:
 # - install python-virtualenv
 # - create galaxy user + group + directory
-# - copy galaxy files from stage 1
+# - copy galaxy files from stage 2.1 and 2.2
 # - finalize container (set path, user...)
 
 # Init ARGs
@@ -16,12 +22,14 @@ ARG SERVER_DIR=$ROOT_DIR/server
 # For much faster build time override this with image0 (Dockerfile.0 build):
 #   docker build --build-arg BASE=<image0 name>...
 ARG STAGE1_BASE=ubuntu:20.04
-ARG STAGE2_BASE=$STAGE1_BASE
+ARG FINAL_STAGE_BASE=$STAGE1_BASE
 # NOTE: the value of GALAXY_USER must be also hardcoded in COPY in final stage
 ARG GALAXY_USER=galaxy
 ARG GALAXY_PLAYBOOK_REPO=https://github.com/galaxyproject/galaxy-docker-k8s
 
-# Stage-1
+#======================================================
+# Stage 1 - Setup common requirements for build
+#======================================================
 FROM $STAGE1_BASE AS stage1
 ARG DEBIAN_FRONTEND=noninteractive
 ARG SERVER_DIR
@@ -61,7 +69,14 @@ RUN ansible-galaxy install -r requirements.yml -p roles --force-with-deps
 
 # Add Galaxy source code
 COPY . $SERVER_DIR/
-RUN ansible-playbook -i localhost, playbook.yml -v
+
+#======================================================
+# Stage 2.1 - Build galaxy server
+#======================================================
+FROM stage1 AS server_build
+ARG SERVER_DIR
+
+RUN ansible-playbook -i localhost, playbook.yml -v -e galaxy_build_client=False
 
 RUN cat /galaxy/server/lib/galaxy/dependencies/conditional-requirements.txt | grep psycopg2-binary | xargs /galaxy/server/.venv/bin/pip install
 
@@ -81,8 +96,31 @@ RUN rm -rf \
 # Clean up *all* node_modules, including plugins.  Everything is already built+staged.
 RUN find . -name "node_modules" -type d -prune -exec rm -rf '{}' +
 
-# Stage-2
-FROM $STAGE2_BASE
+#======================================================
+# Stage 2.2 - Build galaxy client
+#======================================================
+FROM stage1 AS client_build
+ARG SERVER_DIR
+
+RUN ansible-playbook -i localhost, playbook.yml -v --tags "galaxy_build_client"
+
+WORKDIR $SERVER_DIR
+RUN rm -rf \
+        .ci \
+        .git \
+        .venv/bin/node \
+        .venv/include/node \
+        .venv/src/node* \
+        doc \
+        test \
+        test-data
+# Clean up *all* node_modules, including plugins.  Everything is already built+staged.
+RUN find . -name "node_modules" -type d -prune -exec rm -rf '{}' +
+
+#======================================================
+# Stage 3 - Build final image based on previous stages
+#======================================================
+FROM $FINAL_STAGE_BASE
 ARG DEBIAN_FRONTEND=noninteractive
 ARG ROOT_DIR
 ARG SERVER_DIR
@@ -115,7 +153,8 @@ RUN set -xe; \
 WORKDIR $ROOT_DIR
 # Copy galaxy files to final image
 # The chown value MUST be hardcoded (see #35018 at github.com/moby/moby)
-COPY --chown=galaxy:galaxy --from=stage1 $ROOT_DIR .
+COPY --chown=galaxy:galaxy --from=server_build $ROOT_DIR .
+COPY --chown=galaxy:galaxy --from=client_build $SERVER_DIR/static ./server/static
 
 WORKDIR $SERVER_DIR
 EXPOSE 8080