Update to Alpine 3.4

Dockerfile

@@ -2,7 +2,7 @@
 # Set the base image for subsequent instructions:
 #------------------------------------------------------------------------------
 
-FROM alpine:3.3
+FROM alpine:3.4
 MAINTAINER Marc Villacorta Morera <[email protected]>
 
 #------------------------------------------------------------------------------
@@ -16,15 +16,17 @@ ENV PORTUS_VERSION="master" \
 # Install:
 #------------------------------------------------------------------------------
 
-RUN apk --no-cache add --update -t deps git ruby-mini_portile gcc make \
-    musl-dev libxml2-dev libxslt-dev mariadb-dev openssl-dev \
+RUN apk --no-cache add --update -t deps git gcc make musl-dev \
+    libxml2-dev libxslt-dev mariadb-dev openssl-dev libffi-dev \
     && apk --no-cache add bash ruby-bundler ruby-dev nodejs tzdata libxslt \
     mariadb-libs mariadb-client openssl ruby-io-console ruby-bigdecimal \
+    mariadb-client-libs curl-dev \
     && echo 'gem: --verbose --no-document' > /etc/gemrc; cd /tmp \
     && git clone https://github.com/SUSE/Portus.git . \
     && git checkout ${PORTUS_VERSION}; mkdir /portus \
     && git archive ${PORTUS_VERSION} | tar -xC /portus \
     && git rev-parse --short HEAD > /portus/VERSION; cd /portus \
+    && sed -i 's/mysql2 (0.3.18)/mysql2 (0.4.4)/' Gemfile.lock \
     && bundle install --retry=3 \
     && apk del --purge deps; rm -rf /tmp/* /var/cache/apk/*
 

README.md

@@ -57,11 +57,14 @@ docker run -it --rm \
 --env MYSQL_DATABASE=portus \
 mariadb:10
 ```
-Note that PUMA_IP is to be used if you want to have the registry and portus running on the same port but on different addresses, for example: 
+
+##### 3. Portus:
+
+Note that `PUMA_IP` is to be used if you want to have the registry and portus running on the same port but on different addresses, for example:
+
   - Portus -> 10.0.0.1:443
   - Registry -> 10.0.0.2:443
 
-##### 3. Portus:
 ```
 cd portus && docker run -it --rm \
 --net host --name portus \
@@ -87,9 +90,10 @@ cd portus && docker run -it --rm \
 h0tbird/portus:latest
 ```
 
+##### 4. Registry:
+
 Make sure any endpoint defined in `SSL_TRUST` is up and running before starting the registry.
 
-##### 4. Registry:
 ```
 cd portus && docker run -it --rm \
 --net host --name registry \
@@ -109,7 +113,7 @@ cd portus && docker run -it --rm \
 --env ENDPOINT_TIMEOUT=500 \
 --env ENDPOINT_THRESHOLD=5 \
 --env ENDPOINT_BACKOFF=1 \
-h0tbird/registry:v2.3.0-2
+h0tbird/registry:v2.4.1-1
 ```
 
 ##### 5. Docker: