use asdf based terraform

app/Dockerfile

@@ -9,6 +9,7 @@ FROM ghcr.io/runatlantis/atlantis:${ATLANTIS_VERSION} AS base
 ARG ASDF_VERSION=v0.14.0
 ARG K8S_VERSION=1.29.2
 ARG HELM_VERSION=3.14.2
+ARG TF_VERSION=1.5.7
 ARG TG_VERSION=0.55.13
 ARG TG_ATLANTIS_VERSION=1.17.4
 ARG CONFTEST_VERSION=0.50.0
@@ -69,6 +70,7 @@ RUN bash -l -c " \
     asdf plugin-add kubectl && \
     asdf plugin-add helm && \
     asdf plugin-add terragrunt && \
+    asdf plugin-add terraform && \
     asdf plugin-add conftest && \
     asdf plugin-add glab && \
     asdf plugin-add gojq && \
@@ -81,6 +83,7 @@ RUN bash -l -c " \
     cd /home/atlantis/ && \
     asdf install kubectl ${K8S_VERSION} && \
     asdf install helm ${HELM_VERSION} && \
+    asdf install terraform ${TF_VERSION} && \
     asdf install terragrunt ${TG_VERSION} && \
     asdf install conftest ${CONFTEST_VERSION} && \
     asdf install glab ${GLAB_VERSION} && \
@@ -90,6 +93,7 @@ RUN bash -l -c " \
     asdf install yq ${YQ_VERSION} && \
     asdf global kubectl ${K8S_VERSION} && \
     asdf global helm ${HELM_VERSION} && \
+    asdf global terraform ${TF_VERSION} && \
     asdf global terragrunt ${TG_VERSION} && \
     asdf global conftest ${CONFTEST_VERSION} && \
     asdf global glab ${GLAB_VERSION} && \
@@ -99,8 +103,10 @@ RUN bash -l -c " \
     asdf global yq ${YQ_VERSION}"
 
 USER root
-# Additional cleanup
-RUN rm -rf /tmp/*
+# Additional cleanup for non default terraform versions
+RUN rm -f /usr/local/bin/terraform*.* && \
+    rm -rf /tmp/*
+
 # Add 'alias' `jq` to `gojq`
 RUN echo -e '#!/bin/bash \nexec gojq "$@"' > /usr/local/bin/jq && chmod +x /usr/local/bin/jq