freebsd: provide package installation through real scripts

bash functions require that /bin/sh is bash, or that SHELL is set to bash
in the Dockerfile, but the former wastes resources and the latter clashes
with OCI containers apparently not supporting SHELL.

Calling the functionality as real scripts avoids the issue.

docker/Dockerfile.aarch64-unknown-freebsd

@@ -27,6 +27,10 @@ ENV CROSS_SYSROOT=/usr/local/aarch64-unknown-freebsd13
 COPY freebsd-gcc.sh /usr/bin/"$CROSS_TOOLCHAIN_PREFIX"gcc.sh
 COPY toolchain.cmake /opt/toolchain.cmake
 
+COPY freebsd-fetch-best-mirror.sh /
+COPY freebsd-setup-packagesite.sh /
+COPY freebsd-install-package.sh /
+
 ENV CARGO_TARGET_AARCH64_UNKNOWN_FREEBSD_LINKER="$CROSS_TOOLCHAIN_PREFIX"gcc.sh \
     AR_aarch64_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"ar \
     CC_aarch64_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"gcc \

docker/Dockerfile.i686-unknown-freebsd

@@ -27,6 +27,10 @@ ENV CROSS_SYSROOT=/usr/local/i686-unknown-freebsd13
 COPY freebsd-gcc.sh /usr/bin/"$CROSS_TOOLCHAIN_PREFIX"gcc.sh
 COPY toolchain.cmake /opt/toolchain.cmake
 
+COPY freebsd-fetch-best-mirror.sh /
+COPY freebsd-setup-packagesite.sh /
+COPY freebsd-install-package.sh /
+
 ENV CARGO_TARGET_I686_UNKNOWN_FREEBSD_LINKER="$CROSS_TOOLCHAIN_PREFIX"gcc.sh \
     AR_i686_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"ar \
     CC_i686_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"gcc \

docker/Dockerfile.x86_64-unknown-freebsd

@@ -27,6 +27,10 @@ ENV CROSS_SYSROOT=/usr/local/x86_64-unknown-freebsd13
 COPY freebsd-gcc.sh /usr/bin/"$CROSS_TOOLCHAIN_PREFIX"gcc.sh
 COPY toolchain.cmake /opt/toolchain.cmake
 
+COPY freebsd-fetch-best-mirror.sh /
+COPY freebsd-setup-packagesite.sh /
+COPY freebsd-install-package.sh /
+
 ENV CARGO_TARGET_X86_64_UNKNOWN_FREEBSD_LINKER="$CROSS_TOOLCHAIN_PREFIX"gcc.sh \
     AR_x86_64_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"ar \
     CC_x86_64_unknown_freebsd="$CROSS_TOOLCHAIN_PREFIX"gcc \

docker/freebsd-fetch-best-mirror.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+# shellcheck disable=SC1091
+. /freebsd-install.sh
+fetch_best_freebsd_mirror "$@"

docker/freebsd-install-package.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+# shellcheck disable=SC1091
+. /freebsd-install.sh
+install_freebsd_package "$@"

docker/freebsd-setup-packagesite.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+# shellcheck disable=SC1091
+. /freebsd-install.sh
+setup_freebsd_packagesite "$@"