do not install recommended dependencies,

instead of purging unnecessary packages

Author: hakandilek

10/Dockerfile

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,13 +135,12 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 	; \
 	\
-    apt-get purge --yes libmariadbclient18 mysql-common ; \
     apt-get autoremove --yes; \
 	rm -rf /var/lib/apt/lists/*; \
 	\

11/Dockerfile

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,13 +135,12 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 	; \
 	\
-    apt-get purge --yes libmariadbclient18 mysql-common ; \
     apt-get autoremove --yes; \
 	rm -rf /var/lib/apt/lists/*; \
 	\

12/Dockerfile

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,13 +135,12 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 	; \
 	\
-    apt-get purge --yes libmariadb3 mariadb-common mysql-common ; \
     apt-get autoremove --yes; \
 	rm -rf /var/lib/apt/lists/*; \
 	\

9.5/Dockerfile

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,14 +135,13 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 		"postgresql-contrib-$PG_MAJOR=$PG_VERSION" \
 	; \
 	\
-    apt-get purge --yes libmariadbclient18 mysql-common ; \
     apt-get autoremove --yes; \
 	rm -rf /var/lib/apt/lists/*; \
 	\

9.6/Dockerfile

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,14 +135,13 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 		"postgresql-contrib-$PG_MAJOR=$PG_VERSION" \
 	; \
 	\
-    apt-get purge --yes libmariadbclient18 mysql-common ; \
     apt-get autoremove --yes; \
 	rm -rf /var/lib/apt/lists/*; \
 	\

Dockerfile-debian.template

@@ -44,7 +44,7 @@ RUN set -eux; \
 		sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
 		! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
 	fi; \
-	apt-get update; apt-get install -y locales; rm -rf /var/lib/apt/lists/*; \
+	apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
 	localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
@@ -135,9 +135,9 @@ RUN set -ex; \
 			;; \
 	esac; \
 	\
-	apt-get install -y postgresql-common; \
+	apt-get install -y --no-install-recommends postgresql-common; \
 	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
-	apt-get install -y \
+	apt-get install -y --no-install-recommends \
 		"postgresql-$PG_MAJOR=$PG_VERSION" \
 		"postgresql-contrib-$PG_MAJOR=$PG_VERSION" \
 	; \