Switch to dune-randomfield v2.6 release branch

* Update Dockerfile for base image
* Bump Docker base image to v1.2
* Update version info in README.md
* Update CHANGELOG.md

.gitlab-ci.yml

@@ -10,7 +10,7 @@ variables:
   BASE_IMAGE: dorie/dune-env
   # Use semantic versioning (not the version of DUNE) and bump according to
   # to whether changes are backwards-compatible or not.
-  IMAGE_VERSION: "1.1"
+  IMAGE_VERSION: "1.2"
   DUNE_ENV_IMAGE: ${BASE_IMAGE}:img-v${IMAGE_VERSION}
 
   CMAKE_FLAGS:

CHANGELOG.md

@@ -145,6 +145,7 @@
 * Specifying scaling field `extensions` and `offset` is now optional !133
 * Generalized initial condition specification in config file !129
 * Structure and setup of Sphinx user docs !126
+* Switch to stable `dune-randomfield` release branch !151
 
 ### Fixed
 * Solver in `RichardsSimulation` was using the wrong time variable.

README.md

@@ -88,7 +88,7 @@ by CI tests.
 | [dune-functions](https://gitlab.dune-project.org/staging/dune-functions) | releases/2.6
 | [dune-typetree](https://gitlab.dune-project.org/staging/dune-typetree) | releases/2.6
 | [dune-pdelab](https://gitlab.dune-project.org/pdelab/dune-pdelab) | releases/2.6
-| [dune-randomfield](https://gitlab.dune-project.org/oklein/dune-randomfield) | master
+| [dune-randomfield](https://gitlab.dune-project.org/oklein/dune-randomfield) | releases/2.6
 
 
 #### Optional Packages

docker/dune-env.dockerfile

@@ -43,7 +43,7 @@ ENV LANG en_US.utf8
 
 WORKDIR /opt/dune
 RUN git clone https://gitlab.dune-project.org/staging/dune-uggrid.git -b releases/2.6 \
-    && git clone https://gitlab.dune-project.org/oklein/dune-randomfield.git -b master \
+    && git clone https://gitlab.dune-project.org/oklein/dune-randomfield.git -b releases/2.6 \
     && git clone https://gitlab.dune-project.org/core/dune-common.git -b releases/2.6 \
     && git clone https://gitlab.dune-project.org/core/dune-geometry.git -b releases/2.6 \
     && git clone https://gitlab.dune-project.org/core/dune-grid.git -b releases/2.6 \