Use su-exec instead of gosu, much smaller

Dockerfile

@@ -3,9 +3,9 @@ MAINTAINER Thomas Boerger <thomas@webhippie.de>
 
 EXPOSE 22 3000
 
-RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
-  apk -U add \
-    gosu@testing \
+RUN apk update && \
+  apk add \
+    su-exec \
     shadow \
     ca-certificates \
     sqlite \

Dockerfile.rpi

@@ -3,9 +3,9 @@ MAINTAINER Thomas Boerger <thomas@webhippie.de>
 
 EXPOSE 22 3000
 
-RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
-  apk -U add \
-    gosu@testing \
+RUN apk update && \
+  apk add \
+    su-exec \
     shadow \
     ca-certificates \
     sqlite \

docker/etc/s6/gitea/run

@@ -2,5 +2,5 @@
 [[ -f ./setup ]] && source ./setup
 
 pushd /app/gitea > /dev/null
-    exec gosu git /app/gitea/gitea web
+    exec su-exec git /app/gitea/gitea web
 popd

docker/etc/s6/openssh/run

@@ -2,5 +2,5 @@
 [[ -f ./setup ]] && source ./setup
 
 pushd /root > /dev/null
-    exec gosu root /usr/sbin/sshd -E /var/log/sshd.log -D
+    exec su-exec root /usr/sbin/sshd -E /var/log/sshd.log -D
 popd

docker/etc/s6/syslogd/run

@@ -2,5 +2,5 @@
 [[ -f ./setup ]] && source ./setup
 
 pushd /root > /dev/null
-    exec gosu root /sbin/syslogd -nS -O-
+    exec su-exec root /sbin/syslogd -nS -O-
 popd