Index: Dockerfile
==================================================================
--- Dockerfile
+++ Dockerfile
@@ -1,28 +1,26 @@
 ###
 #   Dockerfile for Fossil
 ###
-FROM fedora:24
+FROM fedora:28
 
 ### Now install some additional parts we will need for the build
-RUN dnf update -y && dnf install -y gcc make zlib-devel openssl-devel tar && dnf clean all && groupadd -r fossil -g 433 && useradd -u 431 -r -g fossil -d /opt/fossil -s /sbin/nologin -c "Fossil user" fossil
+RUN dnf update -y && dnf install -y gcc make tcl tcl-devel zlib-devel openssl-devel tar && dnf clean all && groupadd -r fossil -g 433 && useradd -u 431 -r -g fossil -d /opt/fossil -s /sbin/nologin -c "Fossil user" fossil
 
 ### If you want to build "trunk", change the next line accordingly.
 ENV FOSSIL_INSTALL_VERSION release
 
-RUN curl "http://core.tcl.tk/tcl/tarball/tcl-src.tar.gz?name=tcl-src&uuid=release" | tar zx
-RUN cd tcl-src/unix && ./configure --prefix=/usr --disable-load && make && make install
-RUN curl "http://www.fossil-scm.org/index.html/tarball/fossil-src.tar.gz?name=fossil-src&uuid=${FOSSIL_INSTALL_VERSION}" | tar zx
-RUN cd fossil-src && ./configure --disable-fusefs --json --with-th1-docs --with-th1-hooks --with-tcl --with-tcl-stubs --with-tcl-private-stubs
+RUN curl "https://www.fossil-scm.org/index.html/tarball/fossil-src.tar.gz?name=fossil-src&uuid=${FOSSIL_INSTALL_VERSION}" | tar zx
+RUN cd fossil-src && ./configure --disable-fusefs --json --with-th1-docs --with-th1-hooks --with-tcl=1 --with-tcl-stubs --with-tcl-private-stubs
 RUN cd fossil-src/src && mv main.c main.c.orig && sed s/\"now\"/0/ <main.c.orig >main.c
 RUN cd fossil-src && make && strip fossil && cp fossil /usr/bin && cd .. && rm -rf fossil-src && chmod a+rx /usr/bin/fossil && mkdir -p /opt/fossil && chown fossil:fossil /opt/fossil
 
 ### Build is done, remove modules no longer needed
-RUN dnf remove -y gcc make zlib-devel openssl-devel tar && dnf clean all
+RUN dnf remove -y gcc make zlib-devel tcl-devel openssl-devel tar && dnf clean all
 
 USER fossil
 
 ENV HOME /opt/fossil
 
 EXPOSE 8080
 
 CMD ["/usr/bin/fossil", "server", "--create", "--user", "admin", "/opt/fossil/repository.fossil"]