diff --git a/docker/Dockerfile-alpine-320 b/docker/Dockerfile-alpine-320
index 0882bb8..baabc06 100644
--- a/docker/Dockerfile-alpine-320
+++ b/docker/Dockerfile-alpine-320
@@ -16,7 +16,7 @@ ARG GITHUB_PAT
 # Background: JAGS needs lapack & lapack-dev but these conflict with openblas-dev which is required by R-dev
 # Solution: first compile JAGS, then remove lapack & lapack-dev again
 # # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
-RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run
+RUN apk add -q --no-cache curl tar make lapack lapack-dev blas blas-dev gcc gfortran g++ htop git cmake tk-dev xvfb xvfb-run xz
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
@@ -50,7 +50,7 @@ RUN R -q -e 'install.packages("remotes", repo = "cloud.r-project.org"); remotes:
 # deps from pak::pkg_deps(".")$package
 RUN R -q -e 'pak::pak(c("DBI", "R6", "RPostgres", "Rcpp", "askpass", "base64enc", "bit64", "bit", "blob", "callr", "cli", "credentials", "curl", "data.table", "desc", "digest", "dplyr", "fansi", "fs", "future.apply", "future", "generics", "gert", "globals", "glue", "hms", "httr", "jsonlite", "lgr", "lifecycle", "listenv", "lubridate", "magrittr", "mime", "openssl", "parallelly", "paws.common", "paws.storage", "pillar", "pkgbuild", "pkgconfig", "processx", "progressr", "ps", "purrr", "rlang", "rstudioapi", "s3fs", "stringi", "stringr", "sys", "tibble", "tidyselect", "timechange", "utf8", "vctrs", "withr", "xml2", "zip", "codetools", "cranlike", "RSQLite", "cachem", "crayon", "debugme", "fastmap", "memoise", "progress"))'
 
-COPY . .
+COPY --link . .
 # remove secrets from COPY
 RUN touch /.Renviron /.envrc && rm /.Renviron /.envrc
 RUN R CMD INSTALL . && rm -rf r-pkg-binaries
diff --git a/docker/Dockerfile-redhat-8 b/docker/Dockerfile-redhat-8
index 8808568..15e83bd 100644
--- a/docker/Dockerfile-redhat-8
+++ b/docker/Dockerfile-redhat-8
@@ -18,7 +18,7 @@ RUN subscription-manager register --username mail@devxy.io --password "$RED_HAT_
 RUN dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm && dnf install -y epel-release
 # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
 # ImageMagick-c++-devel ImageMagick-devel: boths are not auto-installed via pak sysreqs
-RUN dnf install -y -q make lapack-devel git gcc gcc-c++ fontconfig-devel fribidi-devel libjpeg-turbo-devel libtiff-devel postgresql-devel htop libgit2-devel libxml2-devel hiredis ccache cmake xorg-x11-server-Xvfb ImageMagick-c++-devel ImageMagick-devel
+RUN dnf install -y -q make lapack-devel git gcc gcc-c++ fontconfig-devel fribidi-devel libjpeg-turbo-devel libtiff-devel postgresql-devel htop libgit2-devel libxml2-devel hiredis ccache cmake xorg-x11-server-Xvfb ImageMagick-c++-devel ImageMagick-devel xz
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
@@ -41,7 +41,7 @@ RUN bash -c 'echo -e "PKG_SYSREQS = TRUE\nPKG_SYSREQS_VERBOSE = TRUE" > /root/.R
 # deps from pak::pkg_deps(".")$package
 RUN R -q -e 'Sys.setenv("PKG_SYSREQS_PLATFORM" = "redhat-8"); pak::pak(c("DBI", "R6", "RPostgres", "Rcpp", "askpass", "base64enc", "bit64", "bit", "blob", "callr", "cli", "credentials", "curl", "data.table", "desc", "digest", "dplyr", "fansi", "fs", "future.apply", "future", "generics", "gert", "globals", "glue", "hms", "httr", "jsonlite", "lgr", "lifecycle", "listenv", "lubridate", "magrittr", "mime", "openssl", "parallelly", "paws.common", "paws.storage", "pillar", "pkgbuild", "pkgconfig", "processx", "progressr", "ps", "purrr", "rlang", "rstudioapi", "s3fs", "stringi", "stringr", "sys", "tibble", "tidyselect", "timechange", "utf8", "vctrs", "withr", "xml2", "zip", "codetools", "cranlike", "RSQLite", "cachem", "crayon", "debugme", "fastmap", "memoise", "progress"))'
 
-COPY . .
+COPY --link . .
 # remove secrets from COPY
 RUN touch /.Renviron /.envrc && rm /.Renviron /.envrc
 RUN R CMD INSTALL . && rm -rf r-pkg-binaries
diff --git a/docker/Dockerfile-redhat-9 b/docker/Dockerfile-redhat-9
index fc0f400..e4012c2 100644
--- a/docker/Dockerfile-redhat-9
+++ b/docker/Dockerfile-redhat-9
@@ -18,7 +18,7 @@ RUN subscription-manager register --username mail@devxy.io --password "$RED_HAT_
 RUN dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm && dnf install -y epel-release
 # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
 # ImageMagick-c++-devel ImageMagick-devel: boths are not auto-installed via pak sysreqs
-RUN dnf install -y -q make lapack-devel git gcc gcc-c++ fontconfig-devel fribidi-devel libjpeg-turbo-devel libtiff-devel postgresql-devel htop libgit2-devel libxml2-devel hiredis ccache cmake xorg-x11-server-Xvfb tk-devel ImageMagick-c++-devel ImageMagick-devel
+RUN dnf install -y -q make lapack-devel git gcc gcc-c++ fontconfig-devel fribidi-devel libjpeg-turbo-devel libtiff-devel postgresql-devel htop libgit2-devel libxml2-devel hiredis ccache cmake xorg-x11-server-Xvfb tk-devel ImageMagick-c++-devel ImageMagick-devel xz
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
@@ -38,7 +38,7 @@ RUN bash -c 'echo -e "options(crayon.enabled = TRUE, Ncpus = ${NCPUS}, future.gl
 
 RUN R -q -e 'Sys.setenv("PKG_SYSREQS_PLATFORM" = "redhat-9"); pak::pak(c("DBI", "R6", "RPostgres", "Rcpp", "askpass", "base64enc", "bit64", "bit", "blob", "callr", "cli", "credentials", "curl", "data.table", "desc", "digest", "dplyr", "fansi", "fs", "future.apply", "future", "generics", "gert", "globals", "glue", "hms", "httr", "jsonlite", "lgr", "lifecycle", "listenv", "lubridate", "magrittr", "mime", "openssl", "parallelly", "paws.common", "paws.storage", "pillar", "pkgbuild", "pkgconfig", "processx", "progressr", "ps", "purrr", "rlang", "rstudioapi", "s3fs", "stringi", "stringr", "sys", "tibble", "tidyselect", "timechange", "utf8", "vctrs", "withr", "xml2", "zip", "codetools", "cranlike", "RSQLite", "cachem", "crayon", "debugme", "fastmap", "memoise", "progress"))'
 
-COPY . .
+COPY --link . .
 # remove secrets from COPY
 RUN touch /.Renviron /.envrc && rm /.Renviron /.envrc
 RUN R CMD INSTALL . && rm -rf r-pkg-binaries
diff --git a/docker/Dockerfile-ubuntu-2204 b/docker/Dockerfile-ubuntu-2204
index 2d6d17f..1500c32 100644
--- a/docker/Dockerfile-ubuntu-2204
+++ b/docker/Dockerfile-ubuntu-2204
@@ -15,7 +15,7 @@ ENV PGPASS=""
 ARG GITHUB_PAT
 
 # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
-RUN apt update && apt install -y --no-install-recommends gdebi-core g++ gfortran libbz2-dev libblas-dev libicu-dev liblapack-dev liblzma-dev libpaper-utils libpcre2-dev libtcl8.6 libtk8.6 libxt6 unzip zip zlib1g-dev libpcre3-dev libopenblas-dev curl ca-certificates make ccache htop libgit2-dev git libpq-dev libxml2-dev libgit2-dev cmake xvfb libcurl4-openssl-dev
+RUN apt update && apt install -y --no-install-recommends gdebi-core g++ gfortran libbz2-dev libblas-dev libicu-dev liblapack-dev liblzma-dev libpaper-utils libpcre2-dev libtcl8.6 libtk8.6 libxt6 unzip zip zlib1g-dev libpcre3-dev libopenblas-dev curl ca-certificates make ccache htop libgit2-dev git libpq-dev libxml2-dev libgit2-dev cmake xvfb libcurl4-openssl-dev xz-utils
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
@@ -35,7 +35,7 @@ RUN bash -c 'echo -e "options(pkg.sysreqs_verbose = TRUE, crayon.enabled = TRUE,
 
 RUN R -q -e 'pak::pak(c("DBI", "R6", "RPostgres", "Rcpp", "askpass", "base64enc", "bit64", "bit", "blob", "callr", "cli", "credentials", "curl", "data.table", "desc", "digest", "dplyr", "fansi", "fs", "future.apply", "future", "generics", "gert", "globals", "glue", "hms", "httr", "jsonlite", "lgr", "lifecycle", "listenv", "lubridate", "magrittr", "mime", "openssl", "parallelly", "paws.common", "paws.storage", "pillar", "pkgbuild", "pkgconfig", "processx", "progressr", "ps", "purrr", "rlang", "rstudioapi", "s3fs", "stringi", "stringr", "sys", "tibble", "tidyselect", "timechange", "utf8", "vctrs", "withr", "xml2", "zip", "codetools", "cranlike", "RSQLite", "cachem", "crayon", "debugme", "fastmap", "memoise", "progress"))'
 
-COPY . .
+COPY --link . .
 # remove secrets from COPY
 RUN touch /.Renviron /.envrc && rm /.Renviron /.envrc
 RUN R CMD INSTALL . && rm -rf r-pkg-binaries
diff --git a/docker/Dockerfile-ubuntu-2404 b/docker/Dockerfile-ubuntu-2404
index 983f35d..cb53857 100644
--- a/docker/Dockerfile-ubuntu-2404
+++ b/docker/Dockerfile-ubuntu-2404
@@ -15,7 +15,7 @@ ENV PGPASS=""
 ARG GITHUB_PAT
 
 # xvfb: for graphical pkgs requiring tcl, like gWidgets2tcltk
-RUN apt update && apt install -y --no-install-recommends gdebi-core g++ gfortran libbz2-dev libblas-dev libicu-dev liblapack-dev liblzma-dev libpaper-utils libpcre2-dev libtcl8.6 libtk8.6 libxt6 unzip zip zlib1g-dev libpcre3-dev libopenblas-dev curl ca-certificates make ccache htop libgit2-dev git libpq-dev libxml2-dev libgit2-dev cmake xvfb libcurl4-openssl-dev
+RUN apt update && apt install -y --no-install-recommends gdebi-core g++ gfortran libbz2-dev libblas-dev libicu-dev liblapack-dev liblzma-dev libpaper-utils libpcre2-dev libtcl8.6 libtk8.6 libxt6 unzip zip zlib1g-dev libpcre3-dev libopenblas-dev curl ca-certificates make ccache htop libgit2-dev git libpq-dev libxml2-dev libgit2-dev cmake xvfb libcurl4-openssl-dev xz-utils
 
 ### CUSTOM DEPENDENCIES 
 # These usually are not packaged in OS repositories and need to be installed from source
@@ -35,7 +35,7 @@ RUN bash -c 'echo -e "options(pkg.sysreqs_verbose = TRUE, crayon.enabled = TRUE,
 
 RUN R -q -e 'pak::pak(c("DBI", "R6", "RPostgres", "Rcpp", "askpass", "base64enc", "bit64", "bit", "blob", "callr", "cli", "credentials", "curl", "data.table", "desc", "digest", "dplyr", "fansi", "fs", "future.apply", "future", "generics", "gert", "globals", "glue", "hms", "httr", "jsonlite", "lgr", "lifecycle", "listenv", "lubridate", "magrittr", "mime", "openssl", "parallelly", "paws.common", "paws.storage", "pillar", "pkgbuild", "pkgconfig", "processx", "progressr", "ps", "purrr", "rlang", "rstudioapi", "s3fs", "stringi", "stringr", "sys", "tibble", "tidyselect", "timechange", "utf8", "vctrs", "withr", "xml2", "zip", "codetools", "cranlike", "RSQLite", "cachem", "crayon", "debugme", "fastmap", "memoise", "progress"))'
 
-COPY . .
+COPY --link . .
 # remove secrets from COPY
 RUN touch /.Renviron /.envrc && rm /.Renviron /.envrc
 RUN R CMD INSTALL . && rm -rf r-pkg-binaries