try to improve readability of templates by using indentation

template.d/11_repositories

@@ -1,6 +1,14 @@
 ## repositories
 RUN if [ -n "${REPOSITORIES}" ]; then \
       IFS=';' && \
-      for REPOSITORY in ${REPOSITORIES[@]}; do declare -u REPO="${REPOSITORY}" && REPO_GPG=$(eval "echo \$REPOSITORIES_${REPO}_GPG") && REPO_ENTRY=$(eval "eval "echo \$REPOSITORIES_${REPO}_ENTRY"") && \
-      curl -fsSL "${REPO_GPG}" | gpg --dearmor | tee "/etc/apt/trusted.gpg.d/${REPOSITORY}.gpg" > /dev/null && apt-add-repository "deb [arch=amd64] ${REPO_ENTRY}"; done; \
+      for REPOSITORY in ${REPOSITORIES[@]}; \
+      do \
+        declare -u REPO="${REPOSITORY}" && \
+        REPO_GPG=$(eval "echo \$REPOSITORIES_${REPO}_GPG") && \
+        REPO_ENTRY=$(eval "eval "echo \$REPOSITORIES_${REPO}_ENTRY"") && \
+        curl -fsSL "${REPO_GPG}" \
+          | gpg --dearmor \
+          | tee "/etc/apt/trusted.gpg.d/${REPOSITORY}.gpg" > /dev/null && \
+        apt-add-repository "deb [arch=amd64] ${REPO_ENTRY}"; \
+      done; \
     fi

template.d/13_binaries

@@ -1,16 +1,57 @@
 ## binaries
 RUN if [ -n "${BINARIES}" ]; then \
       IFS=';' && \
-      for BINARY in ${BINARIES[@]}; do declare -u BINARY_REPO="${BINARY}" && BINARY_URI=$(eval "echo \$BINARIES_${BINARY_REPO}_URI") && BINARY_PACKAGES=$(eval "echo \$BINARIES_${BINARY_REPO}") && \
-      if [ "${BINARY_REPO}" = "GITHUB" ]; then for BINARY_PACKAGE in ${BINARY_PACKAGES}; do BINARY_PACKAGE_URI=$(echo "${BINARY_URI}/${BINARY_PACKAGE}" | awk -F '=' '{ if (!$3) {version="/latest"}; printf("%s/releases%s", $1, version)}')  && \
-      BINARY_PACKAGE_VERSION=$(echo "${BINARY_PACKAGE}" | awk -F '=' '{print $3".*"$2".tar.gz"}') && \
-      BINARY_PACKAGE_URL=$(curl -fsSL "${BINARY_PACKAGE_URI}" | grep -Po '"browser_download_url": "\K.*?(?=\")' | grep -P "${BINARY_PACKAGE_VERSION}") && \
-      mkdir -p ./github && curl -SsL --retry 5 "${BINARY_PACKAGE_URL}" | tar xz -C ./github && \
-      chmod -R +x ./github/* && mv ./github/* /usr/local/bin/; done; fi && \
-      if [ "${BINARY_REPO}" = "GOOGLE" ]; then for BINARY_PACKAGE in ${BINARY_PACKAGES}; do BINARY_PACKAGE_URI=$(echo "${BINARY_PACKAGE}" | awk -F '=' '{ if (!$2) version=""; else version=$2; printf("%s_%s", $1, version)}') && \
-      BINARY_PACKAGE_VERSION=$(curl -fSsL "${BINARY_URI}" | grep "${BINARY_PACKAGE_URI}" | cut -d '_' -f2 | sort -un | tail -n1 | cut -d '-' -f1) && \
-      BINARY_PACKAGE_URL="https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/$(echo ${BINARY_PACKAGE} | cut -d '=' -f1)-${BINARY_PACKAGE_VERSION}-linux-x86_64.tar.gz" && \
-      mkdir -p ./google && curl -SsL --retry 5 "${BINARY_PACKAGE_URL}" | tar xz -C ./google && \
-      chmod -R +x ./google/* && \
-      sh ./google/*/install.sh --quiet --command-completion true --bash-completion true --path-update true; done; fi; done \
-  fi
+      for BINARY in ${BINARIES[@]}; do \
+        declare -u BINARY_REPO="${BINARY}" && \
+        BINARY_URI=$(eval "echo \$BINARIES_${BINARY_REPO}_URI") && \
+        BINARY_PACKAGES=$(eval "echo \$BINARIES_${BINARY_REPO}") && \
+        \
+        # download binaries from github
+        if [ "${BINARY_REPO}" = "GITHUB" ]; then \
+          for BINARY_PACKAGE in ${BINARY_PACKAGES}; \
+          do \
+            BINARY_PACKAGE_URI=$(\
+              echo "${BINARY_URI}/${BINARY_PACKAGE}" \
+              | awk -F '=' '{ if (!$3) {version="/latest"}; printf("%s/releases%s", $1, version)}'\
+            ) && \
+            BINARY_PACKAGE_VERSION=$(echo "${BINARY_PACKAGE}" | awk -F '=' '{print $3".*"$2".tar.gz"}') && \
+            BINARY_PACKAGE_URL=$(\
+              curl -fsSL "${BINARY_PACKAGE_URI}" \
+              | grep -Po '"browser_download_url": "\K.*?(?=\")' \
+              | grep -P "${BINARY_PACKAGE_VERSION}"\
+            ) && \
+            \
+            mkdir -p ./github && \
+            curl -SsL --retry 5 "${BINARY_PACKAGE_URL}" | tar xz -C ./github && \
+            chmod -R +x ./github/* && \
+            mv ./github/* /usr/local/bin/; \
+          done; \
+        fi && \
+        \
+        # download binaries from google
+        if [ "${BINARY_REPO}" = "GOOGLE" ]; then \
+          for BINARY_PACKAGE in ${BINARY_PACKAGES}; \
+          do \
+            BINARY_PACKAGE_URI=$(\
+              echo "${BINARY_PACKAGE}" \
+              | awk -F '=' '{ if (!$2) version=""; else version=$2; printf("%s_%s", $1, version)}'\
+            ) && \
+            BINARY_PACKAGE_VERSION=$(\
+              curl -fSsL "${BINARY_URI}" \
+              | grep "${BINARY_PACKAGE_URI}" \
+              | cut -d '_' -f2 \
+              | sort -un \
+              | tail -n1 \
+              | cut -d '-' -f1 \
+            ) && \
+            BINARY_PACKAGE_FILENAME="$(echo ${BINARY_PACKAGE} | cut -d '=' -f1)-${BINARY_PACKAGE_VERSION}-linux-x86_64.tar.gz" && \
+            BINARY_PACKAGE_URL="https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/${BINARY_PACKAGE_FILENAME}" && \
+            \
+            mkdir -p ./google && \
+            curl -SsL --retry 5 "${BINARY_PACKAGE_URL}" | tar xz -C ./google && \
+            chmod -R +x ./google/* && \
+            sh ./google/*/install.sh --quiet --command-completion true --bash-completion true --path-update true; \
+          done; \
+        fi; \
+      done; \
+    fi

template.d/21_requirements

@@ -1,11 +1,41 @@
 ## requirements
 RUN if [ -n "${REQUIREMENTS}" ]; then \
       IFS=';' && \
-      for REQUIREMENT in ${REQUIREMENTS[@]}; do IFS='' && declare -u REQ="${REQUIREMENT}" && REQUIREMENTS_REQ=$(eval "echo \$REQUIREMENTS_${REQ}") && \
-      IFS=';' && \
-      if [ "${REQ}" = "PIP" ]; then for REQUIREMENT_REQ in ${REQUIREMENTS_PIP_PACKAGES[@]}; do pip3 install --no-cache-dir "${REQUIREMENT_REQ//=/==}"; done && \
-      for REQUIREMENT_REQ in ${REQUIREMENTS_PIP_REQUIREMENTS[@]}; do pip3 install --no-cache-dir -r "${REQUIREMENT_REQ}"; done; fi && \
-      if [ "${REQ}" = "ANSIBLE" ]; then for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_ROLES[@]}; do ansible-galaxy install "${REQUIREMENT_REQ//=/,}"; done && \
-      for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_COLLECTIONS[@]}; do ansible-galaxy collection install "${REQUIREMENT_REQ//=/:}"; done&& \
-      for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_REQUIREMENTS[@]}; do ansible-galaxy install -r "${REQUIREMENT_REQ}"; done; fi; done \
+      for REQUIREMENT in ${REQUIREMENTS[@]}; \
+      do \
+        IFS='' && \
+        declare -u REQ="${REQUIREMENT}" && \
+        REQUIREMENTS_REQ=$(eval "echo \$REQUIREMENTS_${REQ}") && \
+        IFS=';' && \
+        \
+        if [ "${REQ}" = "PIP" ]; then \
+          for REQUIREMENT_REQ in ${REQUIREMENTS_PIP_PACKAGES[@]}; \
+          do \
+            pip3 install --no-cache-dir "${REQUIREMENT_REQ//=/==}"; \
+          done && \
+          \
+          for REQUIREMENT_REQ in ${REQUIREMENTS_PIP_REQUIREMENTS[@]}; \
+          do \
+            pip3 install --no-cache-dir -r "${REQUIREMENT_REQ}"; \
+          done; \
+        fi && \
+        \
+        if [ "${REQ}" = "ANSIBLE" ]; \
+        then \
+          for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_ROLES[@]}; \
+          do \
+            ansible-galaxy install "${REQUIREMENT_REQ//=/,}"; \
+          done && \
+          \
+          for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_COLLECTIONS[@]}; \
+          do \
+            ansible-galaxy collection install "${REQUIREMENT_REQ//=/:}"; \
+          done && \
+          \
+          for REQUIREMENT_REQ in ${REQUIREMENTS_ANSIBLE_REQUIREMENTS[@]}; \
+          do \
+            ansible-galaxy install -r "${REQUIREMENT_REQ}"; \
+          done; \
+        fi; \
+      done \
     fi

template.d/22_extensions

@@ -1,9 +1,32 @@
 ## extensions
 RUN if [ -n "${EXTENSIONS}" ]; then \
       IFS=';' && \
-      for EXTENSION in ${EXTENSIONS[@]}; do IFS='' && declare -u EXT="${EXTENSION}" && EXTENSIONS_EXT=$(eval "echo \$EXTENSIONS_${EXT}") && \
-      IFS=';' && \
-      if [ "${EXT}" = "AZ" ]; then for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; do az extension add -y --name "${EXTENSION_EXT//=/ --version }"; done; fi && \
-      if [ "${EXT}" = "GOOGLE" ]; then for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; do ./google/*/bin/gcloud components install "${EXTENSION_EXT}" && "${EXTENSION_EXT//.*=/gcloud components update --version }"; done; fi && \
-      if [ "${EXT}" = "HELM" ]; then for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; do helm plugin install "${EXTENSION_EXT//=/ --version}"; done; fi; done \
+      for EXTENSION in ${EXTENSIONS[@]}; do \
+        IFS='' && \
+        declare -u EXT="${EXTENSION}" && \
+        EXTENSIONS_EXT=$(eval "echo \$EXTENSIONS_${EXT}") && \
+        IFS=';' && \
+        \
+        if [ "${EXT}" = "AZ" ]; then \
+          for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; \
+          do \
+            az extension add -y --name "${EXTENSION_EXT//=/ --version }"; \
+          done; \
+        fi && \
+        \
+        if [ "${EXT}" = "GOOGLE" ]; then \
+          for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; \
+          do \
+            ./google/*/bin/gcloud components install "${EXTENSION_EXT}" && \
+            "${EXTENSION_EXT//.*=/gcloud components update --version }"; \
+          done; \
+        fi && \
+        \
+        if [ "${EXT}" = "HELM" ]; then \
+          for EXTENSION_EXT in ${EXTENSIONS_EXT[@]}; \
+          do \
+            helm plugin install "${EXTENSION_EXT//=/ --version}"; \
+          done; \
+        fi; \
+      done \
     fi

template.d/31_profiles

@@ -1,7 +1,14 @@
 ## profiles
 RUN if [ -n "${PROFILES}" ]; then \
       IFS=';' && \
-      for PROFILE in ${PROFILES[@]}; do IFS='' && declare -u PR="${PROFILE//./_}" && PROFILES_PR=$(eval "echo \$PROFILES_${PR}") && \
-      IFS=';' && \
-      for PROFILE_PR in ${PROFILES_PR[@]}; do echo "${PROFILE_PR}" >> "${PROFILE}"; done; done \
+      for PROFILE in ${PROFILES[@]}; \
+      do \
+        IFS='' && \
+        declare -u PR="${PROFILE//./_}" && \
+        PROFILES_PR=$(eval "echo \$PROFILES_${PR}") && \
+        IFS=';' && \
+        for PROFILE_PR in ${PROFILES_PR[@]}; do \
+          echo "${PROFILE_PR}" >> "${PROFILE}"; \
+        done; \
+      done \
     fi

template.d/32_post_build_commands

@@ -1,5 +1,7 @@
 ## post_build_commands
 RUN if [ -n "${POST_BUILD_COMMANDS}" ]; then \
       IFS=';' && \
-      for POST_BUILD_COMMAND in "${POST_BUILD_COMMANDS[@]}"; do bash -c "${POST_BUILD_COMMAND}"; done \
+      for POST_BUILD_COMMAND in "${POST_BUILD_COMMANDS[@]}"; do \
+        bash -c "${POST_BUILD_COMMAND}"; \
+      done \
     fi