build slim image

.travis.yml

@@ -1,39 +1,79 @@
 language: shell
-
-env:
-  - IMAGE_NAME="${DOCKER_ORG}/geospaas"
-
 services:
   - docker
 
-if: type != pull_request
+# Environment variables defined as part of the Travis CI repository configuration are:
+# - DOCKER_ORG: the docker hub organization (or user) to which the image will be pushed
+# - DOCKER_USER: the docker hub user used to log in to the docker hub
+# - DOCKER_PASS: the password of this user
+# - PYPI_TOKEN: the token associated to the pypi account for deployment. More information can be found here: https://pypi.org/help/#apitoken
+# - COVERALLS_REPO_TOKEN: authentication token for coveralls.io
 
-install:
-  - docker pull $IMAGE_NAME || true
-  - docker build --cache-from $IMAGE_NAME . -t $IMAGE_NAME
+env:
+  global:
+    - IMAGE_NAME="${DOCKER_ORG}/geospaas"
 
-script:
-  - >
-    docker run --rm
-    -e COVERALLS_REPO_TOKEN
-    -e "TRAVIS=true"
-    -e TRAVIS_JOB_ID
-    -e TRAVIS_BRANCH
-    -e TRAVIS_PULL_REQUEST
-    -v "$(pwd):/src"
-    $IMAGE_NAME
-    bash -c "source /opt/conda/bin/activate && coverage run --omit=geospaas/nansat_ingestor/tests/*,geospaas/catalog/tests/*,geospaas/vocabularies/tests/* runtests.py  && coveralls"
+jobs:
+  include:
+    - stage: 'Unit tests'
+      if: type = push
+      env:
+        - TEST_IMAGE="${IMAGE_NAME}:latest"
+      install:
+        - docker pull "${TEST_IMAGE}" || true
+      script:
+        - >
+          docker run --rm
+          -e COVERALLS_REPO_TOKEN
+          -e "TRAVIS=true"
+          -e TRAVIS_JOB_ID
+          -e TRAVIS_BRANCH
+          -e TRAVIS_PULL_REQUEST
+          -v "$(pwd):/src"
+          ${TEST_IMAGE}
+          bash -c "source /opt/conda/bin/activate && coverage run --omit=geospaas/nansat_ingestor/tests/*,geospaas/catalog/tests/*,geospaas/vocabularies/tests/* runtests.py  && coveralls"
+      deploy:
+        - provider: pypi
+          user: "__token__"
+          password: "${PYPI_TOKEN}"
+          on:
+            tags: true
 
-before_deploy:
-  - docker login -u $DOCKER_USER -p $DOCKER_PASS
+    - stage: 'Build Docker images'
+      name: 'Build standard image'
+      if: type = push
+      env:
+        - TAG='latest'
+      install:
+        - docker pull "${IMAGE_NAME}:${TAG}" || true
+        - >
+          docker build .
+          --cache-from "${IMAGE_NAME}:${TAG}"
+          --build-arg BASE_IMAGE="nansencenter/nansat:${TAG}"
+          -t "${IMAGE_NAME}:tmp"
+      before_deploy:
+        - docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
+      deploy:
+        - provider: script
+          on:
+            tags: true
+          script: /bin/bash scripts/docker_push.sh $TRAVIS_TAG latest
 
-deploy:
-  - provider: script
-    on:
-      tags: true
-    script: /bin/bash scripts/docker_push.sh $TRAVIS_TAG latest
-  - provider: pypi
-    user: "__token__"
-    password: "${PYPI_TOKEN}"
-    on:
-      tags: true
+    - name: 'Build slim image'
+      if: type = push
+      env:
+        - TAG='latest-slim'
+      install:
+        - docker pull "${IMAGE_NAME}:${TAG}" || true
+        - >
+          docker build .
+          --cache-from "${IMAGE_NAME}:${TAG}"
+          --build-arg BASE_IMAGE="nansencenter/nansat:${TAG}"
+          -t "${IMAGE_NAME}:tmp"
+      before_deploy:
+        - docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
+      deploy:
+        - provider: script
+          on:
+            tags: true
+          script: /bin/bash scripts/docker_push.sh "${TRAVIS_TAG}-slim" 'latest-slim'

Dockerfile

@@ -1,17 +1,26 @@
 # Initialize from docker image with Python, libraries and Nansat
-FROM nansencenter/nansat:latest
+ARG BASE_IMAGE='nansencenter/nansat:latest'
+FROM ${BASE_IMAGE}
 LABEL purpose="Running and developing Django-Geo-SpaaS"
 ENV PYTHONUNBUFFERED=1
 
 # Install Django
-RUN pip install \
+RUN apt update \
+&&  apt install -y \
+    # psycopg2 dependencies
+    g++ \
+    libpq5 \
+    libpq-dev \
+&&  pip install \
     bs4 \
     coverage \
     django==3.0.6 \
     django-forms-bootstrap==3.1.0 \
     django-leaflet==0.26.0 \
     psycopg2==2.8.4 \
     thredds_crawler==1.5.4 \
+&&  apt remove -y g++ && apt autoremove -y \
+&&  apt clean && rm -rf /var/lib/apt/lists/* \
 &&  echo "alias ll='ls -lh'" >> /root/.bashrc
 
 # install Geo-SPaaS

scripts/docker_push.sh

@@ -1,4 +1,4 @@
 for tag in $*;do
-    docker tag "${IMAGE_NAME}" "${IMAGE_NAME}:${tag}"
+    docker tag "${IMAGE_NAME}:tmp" "${IMAGE_NAME}:${tag}"
     docker push "${IMAGE_NAME}:${tag}"
 done