Add Readme and example compose file

.dockerignore

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+.git
+.gitignore
+LICENSE
+VERSION
+README.md
+Changelog.md
+Makefile
+docker-compose.yml
+docs

.travis.yml

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+sudo: required
+language: bash
+services:
+  - docker
+script:
+ - docker build -t martialblog/limesurvey .

README.md

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+# LimeSurvey Docker
+
+Dockerfile to build a [LimeSurvey](https://limesurvey.org) image for the Docker container platform.

docker-compose.yml

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+version: "3.0"
+services:
+  limesurvey:
+    build:
+      context: .
+      dockerfile: apache/Dockerfile
+    links:
+      - lime-db
+    depends_on:
+      - lime-db
+    ports:
+      - "8080:80"
+  lime-db:
+    image: mysql:5.7
+    environment:
+      - "MYSQL_USER=limesurvey"
+      - "MYSQL_DATABASE=limesurvey"
+      - "MYSQL_PASSWORD=secret"
+      - "MYSQL_ROOT_PASSWORD=secret"