Corrige Dockerfile

O Dockerfile estava desconsiderando as dependências concretas, definidas
no arquivo `requirements.txt` e instalando-as a partir das declarações
abstratas do módulo `setup.py`, o que causava falta de determinismo na
criação das imagens.

Esta mudança corrige o ponto mencionado e faz ainda outras melhorias,
como o desligamento do buffer de IO do interpretador Python, definição
de usuário do processo e criação de de `docker-compose.yml` de exemplo
para execução local.

Dockerfile

@@ -1,4 +1,5 @@
 FROM python:3.5.2
+ENV PYTHONUNBUFFERED 1
 
 MAINTAINER [email protected]
 
@@ -9,10 +10,14 @@ COPY production.ini-TEMPLATE /app/config.ini
 
 WORKDIR /app
 
-RUN pip install --upgrade pip
-RUN pip install gunicorn
-RUN pip install --upgrade deps/scielojcr-1.3.0-py2.py3-none-any.whl
+RUN pip install --upgrade pip && \
+    pip install gunicorn && \
+    pip install --upgrade deps/scielojcr-1.3.0-py2.py3-none-any.whl && \
+    pip install -r requirements.txt && \
+    python setup.py install
 
 ENV ANALYTICS_SETTINGS_FILE=/app/config.ini
 
-RUN python setup.py install
+USER nobody
+
+CMD ["gunicorn", "--paste", "/app/config.ini", "-b", "0.0.0.0", "--forwarded-allow-ips", "*"]

Dockerfile-dev

@@ -1,4 +1,5 @@
 FROM python:3.5.2
+ENV PYTHONUNBUFFERED 1
 
 MAINTAINER [email protected]
 
@@ -9,10 +10,14 @@ COPY development.ini-TEMPLATE /app/config.ini
 
 WORKDIR /app
 
-RUN pip install --upgrade pip
-RUN pip install gunicorn
-RUN pip install --upgrade deps/scielojcr-1.3.0-py2.py3-none-any.whl
+RUN pip install --upgrade pip && \
+    pip install gunicorn && \
+    pip install --upgrade deps/scielojcr-1.3.0-py2.py3-none-any.whl && \
+    pip install -r requirements.txt && \
+    python setup.py install
 
 ENV ANALYTICS_SETTINGS_FILE=/app/config.ini
 
-RUN python setup.py develop
+USER nobody
+
+CMD ["gunicorn", "--paste", "/app/config.ini", "-b", "0.0.0.0", "--forwarded-allow-ips", "*"]

docker-compose.yml

@@ -0,0 +1,16 @@
+version: '2'
+
+services:
+    memcached:
+        image: memcached
+        restart: always
+    webapp:
+        build:
+            context: .
+            dockerfile: ./Dockerfile
+        user: nobody
+        restart: always
+        depends_on:
+            - memcached
+        ports:
+            - "8000:8000"

requirements.txt

@@ -1,4 +1,4 @@
-requests==2.11.1
+requests==2.19.1
 cython==0.22
 thriftpy==0.3.1
 pyramid==1.5.7
@@ -16,4 +16,3 @@ publicationstatsapi==1.2.0
 articlemetaapi==1.14.19
 altmetric==1.0.0
 -e git+https://github.com/scieloorg/[email protected]#egg=thriftpywrap
--e git+https://github.com/scieloorg/[email protected]#egg=analytics