refactor(devcontainer): build on the appcontainer

.devcontainer/Dockerfile

@@ -1,42 +1,8 @@
-ARG PYTHON_VERSION=3.12
+FROM caltrans/pems:app
 
-FROM python:${PYTHON_VERSION}
-
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1 \
-    USER=caltrans
-
-# create non-root $USER and home directory
-RUN useradd --create-home --shell /bin/bash $USER && \
-    chown -R $USER /home/$USER
-
-# switch to $USER
-USER $USER
-
-# enter src directory
-WORKDIR /home/$USER/src
-
-# update PATH for local pip installs
-ENV PATH="$PATH:/home/$USER/.local/bin"
-
-# upgrade pip
-RUN python -m pip install --upgrade pip
-
-# copy assets
 COPY . .
-
 # install devcontainer requirements
 RUN pip install -e .[dev]
 
 # install docs requirements
 RUN pip install --no-cache-dir -r docs/requirements.txt
-
-# install pre-commit environments in throwaway Git repository
-# https://stackoverflow.com/a/68758943
-RUN git init . && \
-    pre-commit install-hooks && \
-    rm -rf .git
-
-CMD sleep infinity
-
-ENTRYPOINT []

.devcontainer/postAttach.sh

@@ -3,4 +3,4 @@ set -eux
 
 # initialize pre-commit
 git config --global --add safe.directory /home/$USER/src
-pre-commit install --overwrite
+pre-commit install --install-hooks --overwrite

.env.sample

@@ -8,6 +8,9 @@ DJANGO_DB_RESET=true
 DJANGO_STORAGE_DIR=.
 DJANGO_DB_FILE=django.db
 
+# Other Django config
+DJANGO_DEBUG=true
+
 # uncomment to start the elasticstack services with compose
 # COMPOSE_PROFILES=elasticstack
 

compose.yml

@@ -14,13 +14,15 @@ services:
     build:
       context: .
       dockerfile: .devcontainer/Dockerfile
-    image: caltrans/pems:main
+    image: caltrans/pems:dev
     env_file: .env
+    # https://code.visualstudio.com/docs/remote/create-dev-container#_use-docker-compose
+    entrypoint: sleep infinity
     volumes:
       - ./:/home/caltrans/src
 
   docs:
-    image: caltrans/pems:main
+    image: caltrans/pems:dev
     entrypoint: mkdocs
     command: serve --dev-addr "0.0.0.0:8000"
     ports: