Use nginx alpine in static dockerfile

Dockerfile.static

@@ -12,7 +12,7 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
-FROM nginx
+FROM nginx:alpine
 
 MAINTAINER Jones MAGLOIRE @Joxit
 
@@ -23,4 +23,4 @@ COPY dist/scripts/script-static.js /usr/share/nginx/html/scripts/script.js
 COPY dist/scripts/tags-static.js /usr/share/nginx/html/scripts/tags.js
 COPY bin/entrypoint /bin
 
-ENTRYPOINT entrypoint
+ENTRYPOINT entrypoint

bin/entrypoint

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 $@
 sed -i "s,\${URL},${URL}," scripts/script.js
 
@@ -10,4 +10,4 @@ if [ -z "$@" ]; then
   nginx -g "daemon off;"
 else
   $@
-fi
+fi