Trim and include Ansible

Dockerfile

@@ -57,19 +57,16 @@ py3-yaml \
 python3 \
 python3-dev
 
-ENV MOLECULE_PLUGINS="\
-molecule-hetznercloud \
-"
-
 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917006
-RUN python3 -m pip install -U wheel pip setuptools
+RUN \
+python3 -m pip install -U wheel pip setuptools
 
 ADD . .
 
 RUN \
 python3 -m pip wheel \
 -w dist \
-molecule testinfra ${MOLECULE_PLUGINS}
+molecule testinfra molecule-hetznercloud ansible
 
 RUN ls -1 dist/
 
@@ -132,10 +129,6 @@ ENV PIP_INSTALL_ARGS="\
 -f /usr/src/molecule/dist \
 "
 
-ENV MOLECULE_PLUGINS="\
-molecule-hetznercloud \
-"
-
 RUN \
 apk add --update --no-cache \
 ${BUILD_DEPS} ${PACKAGES} \
@@ -147,11 +140,6 @@ COPY --from=molecule-builder \
 /usr/src/molecule/dist
 
 RUN \
-python3 -m pip install \
-${PIP_INSTALL_ARGS} \
-molecule testinfra ${MOLECULE_PLUGINS} && \
-molecule --version && \
-molecule drivers && \
-pip check
+python3 -m pip install molecule testinfra molecule-hetznercloud ansible
 
 ENV SHELL /bin/bash