Refactoring API startup process in docker

- Enable reading configuration from git, to be able to support Mesos and Kubernetes, see Haufe-Lexware/wicked.haufe.io#34

Dockerfile.template

@@ -4,4 +4,4 @@ EXPOSE 3001
 
 RUN cp -R /usr/src/portal-env/initial-config /var/portal-api
 
-CMD [ "npm", "start" ]
+CMD [ "/usr/src/app/bin/docker-start.sh" ]

bin/docker-start.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -e
+
+runtimeEnv=$(uname)
+
+if [ "$runtimeEnv" != "Linux" ] || [ ! -f /.dockerenv ]; then
+    echo "Do not use this script in non-dockerized environments."
+    echo "Detected non-Linux runtime $runtimeEnv, or /.dockerenv is not present."
+    echo "Use 'node bin/api' or 'npm start'.'"
+    exit 1
+fi
+
+exit 1
+
+if [ ! -z "$GIT_CREDENTIALS" ] && [ ! -z "$GIT_REPO" ]; then
+
+    tmpDir=$(mktemp -d)
+
+    echo "Cloning configuration repository from $GIT_REPO into $tmpDir..."
+    pushd $tmpDir
+
+    if [ -z "$GIT_BRANCH" ]; then
+        echo "Checking out branch 'master'..."
+        git clone https://${GIT_CREDENTIALS}@${GIT_REPO} --depth 1 .
+    else
+        echo "Checking out branch '$GIT_BRANCH'..."
+        git clone https://${GIT_CREDENTIALS}@${GIT_REPO} --depth 1 --branch ${GIT_BRANCH} .
+    fi
+
+    if [ ! -d "$tmpDir/static" ]; then
+        echo "===================================================================================="
+        echo "ERROR: Could not find directory 'static' in $tmpDir, wrong repository?"
+        echo "===================================================================================="
+        exit 1
+    fi
+
+    echo "Cleaning up old configuration (if applicable)"
+    rm -rf /var/portal-api/static
+    echo "Copying configuration to /var/portal-api/static"
+    cp -R static /var/portal-api
+    echo "Done."
+
+    popd
+
+    echo "Cleanining up temp dir."
+    rm -rf $tmpDir
+
+else
+    echo "Assuming /var/portal-api/static is prepopulated, not cloning configuration repo."
+fi
+
+echo "Starting API..."
+
+npm start

package.json

@@ -1,5 +1,5 @@
 {
-  "version": "0.10.1", 
+  "version": "0.10.2", 
   "private": true, 
   "dependencies": {
     "chai": "3.5.0",